diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
index 63d4d626..483e9cf 100644
--- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
+++ b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
@@ -39,3 +39,27 @@
 		....
 	};
 };
+
+Example showing the usage of two SPI NOR devices:
+
+&qspi2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_qspi2>;
+	status = "okay";
+
+	flash0: n25q256a@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "micron,n25q256a", "jedec,spi-nor";
+		spi-max-frequency = <29000000>;
+		reg = <0>;
+	};
+
+	flash1: n25q256a@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "micron,n25q256a", "jedec,spi-nor";
+		spi-max-frequency = <29000000>;
+		reg = <1>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/mtd/mtd-physmap.txt b/Documentation/devicetree/bindings/mtd/mtd-physmap.txt
index 4a0a48b..232fa12 100644
--- a/Documentation/devicetree/bindings/mtd/mtd-physmap.txt
+++ b/Documentation/devicetree/bindings/mtd/mtd-physmap.txt
@@ -41,6 +41,13 @@
 
  - erase-size : The chip's physical erase block size in bytes.
 
+ The device tree may optionally contain endianness property.
+ little-endian or big-endian : It Represents the endianness that should be used
+                               by the controller to  properly read/write data
+			       from/to the flash. If this property is missing,
+			       the endianness is chosen by the system
+			       (potentially based on extra configuration options).
+
 The device tree may optionally contain sub-nodes describing partitions of the
 address space. See partition.txt for more detail.
 
diff --git a/MAINTAINERS b/MAINTAINERS
index d262f17..fc3427d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9037,7 +9037,6 @@
 M:	Boris Brezillon <boris.brezillon@bootlin.com>
 M:	Marek Vasut <marek.vasut@gmail.com>
 M:	Richard Weinberger <richard@nod.at>
-M:	Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
 L:	linux-mtd@lists.infradead.org
 W:	http://www.linux-mtd.infradead.org/
 Q:	http://patchwork.ozlabs.org/project/linux-mtd/list/
@@ -13000,7 +12999,6 @@
 F:	arch/arm/mach-spear/
 
 SPI NOR SUBSYSTEM
-M:	Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
 M:	Marek Vasut <marek.vasut@gmail.com>
 L:	linux-mtd@lists.infradead.org
 W:	http://www.linux-mtd.infradead.org/
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5e1b68c..d4c07b8 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1993,20 +1993,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 
 static int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr)
 {
-	unsigned long ofs, len;
-	int ret;
-
-	ofs = instr->addr;
-	len = instr->len;
-
-	ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr,
+				instr->len, NULL);
 }
 
 static void cfi_intelext_sync (struct mtd_info *mtd)
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 56aa6b7..668e2cb 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -2415,20 +2415,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 
 static int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr)
 {
-	unsigned long ofs, len;
-	int ret;
-
-	ofs = instr->addr;
-	len = instr->len;
-
-	ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr,
+				instr->len, NULL);
 }
 
 
@@ -2436,7 +2424,6 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
 {
 	struct map_info *map = mtd->priv;
 	struct cfi_private *cfi = map->fldrv_priv;
-	int ret = 0;
 
 	if (instr->addr != 0)
 		return -EINVAL;
@@ -2444,14 +2431,7 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
 	if (instr->len != mtd->size)
 		return -EINVAL;
 
-	ret = do_erase_chip(map, &cfi->chips[0]);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return do_erase_chip(map, &cfi->chips[0]);
 }
 
 static int do_atmel_lock(struct map_info *map, struct flchip *chip,
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 7d34296..7b7658a 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -965,9 +965,6 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
 		}
 	}
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return 0;
 }
 
diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c
index 7c0b27d..9516439bb 100644
--- a/drivers/mtd/chips/jedec_probe.c
+++ b/drivers/mtd/chips/jedec_probe.c
@@ -53,6 +53,8 @@
 #define AT49BV32XT	0x00C9
 
 /* Eon */
+#define EN29LV400AT	0x22B9
+#define EN29LV400AB	0x22BA
 #define EN29SL800BB	0x226B
 #define EN29SL800BT	0x22EA
 
@@ -643,6 +645,36 @@ static const struct amd_flash_info jedec_table[] = {
 		}
 	}, {
 		.mfr_id		= CFI_MFR_EON,
+		.dev_id		= EN29LV400AT,
+		.name		= "Eon EN29LV400AT",
+		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
+		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
+		.dev_size	= SIZE_512KiB,
+		.cmd_set	= P_ID_AMD_STD,
+		.nr_regions	= 4,
+		.regions	= {
+			ERASEINFO(0x10000,7),
+			ERASEINFO(0x08000,1),
+			ERASEINFO(0x02000,2),
+			ERASEINFO(0x04000,1),
+		}
+	}, {
+		.mfr_id		= CFI_MFR_EON,
+		.dev_id		= EN29LV400AB,
+		.name		= "Eon EN29LV400AB",
+		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
+		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
+		.dev_size	= SIZE_512KiB,
+		.cmd_set	= P_ID_AMD_STD,
+		.nr_regions	= 4,
+		.regions	= {
+			ERASEINFO(0x04000,1),
+			ERASEINFO(0x02000,2),
+			ERASEINFO(0x08000,1),
+			ERASEINFO(0x10000,7),
+		}
+	}, {
+		.mfr_id		= CFI_MFR_EON,
 		.dev_id		= EN29SL800BT,
 		.name		= "Eon EN29SL800BT",
 		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c
index 1cd0fff..c37fce9 100644
--- a/drivers/mtd/chips/map_ram.c
+++ b/drivers/mtd/chips/map_ram.c
@@ -131,8 +131,6 @@ static int mapram_erase (struct mtd_info *mtd, struct erase_info *instr)
 	allff = map_word_ff(map);
 	for (i=0; i<instr->len; i += map_bankwidth(map))
 		map_write(map, allff, instr->addr + i);
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c
index e2bd818..9baa81b 100644
--- a/drivers/mtd/devices/bcm47xxsflash.c
+++ b/drivers/mtd/devices/bcm47xxsflash.c
@@ -68,7 +68,6 @@ static int bcm47xxsflash_poll(struct bcm47xxsflash *b47s, int timeout)
 static int bcm47xxsflash_erase(struct mtd_info *mtd, struct erase_info *erase)
 {
 	struct bcm47xxsflash *b47s = mtd->priv;
-	int err;
 
 	switch (b47s->type) {
 	case BCM47XXSFLASH_TYPE_ST:
@@ -89,16 +88,7 @@ static int bcm47xxsflash_erase(struct mtd_info *mtd, struct erase_info *erase)
 		break;
 	}
 
-	err = bcm47xxsflash_poll(b47s, HZ);
-	if (err)
-		erase->state = MTD_ERASE_FAILED;
-	else
-		erase->state = MTD_ERASE_DONE;
-
-	if (erase->callback)
-		erase->callback(erase);
-
-	return err;
+	return bcm47xxsflash_poll(b47s, HZ);
 }
 
 static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 62fd690..c9e4249 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -88,17 +88,12 @@ static int block2mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
 	size_t len = instr->len;
 	int err;
 
-	instr->state = MTD_ERASING;
 	mutex_lock(&dev->write_mutex);
 	err = _block2mtd_erase(dev, from, len);
 	mutex_unlock(&dev->write_mutex);
-	if (err) {
+	if (err)
 		pr_err("erase failed err = %d\n", err);
-		instr->state = MTD_ERASE_FAILED;
-	} else
-		instr->state = MTD_ERASE_DONE;
 
-	mtd_erase_callback(instr);
 	return err;
 }
 
@@ -225,7 +220,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size,
 	int i;
 #endif
 	const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
-	struct block_device *bdev = ERR_PTR(-ENODEV);
+	struct block_device *bdev;
 	struct block2mtd_dev *dev;
 	char *name;
 
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index a85af23..c594fe5 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1191,39 +1191,27 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
 {
 	struct docg3 *docg3 = mtd->priv;
 	uint64_t len;
-	int block0, block1, page, ret, ofs = 0;
+	int block0, block1, page, ret = 0, ofs = 0;
 
 	doc_dbg("doc_erase(from=%lld, len=%lld\n", info->addr, info->len);
 
-	info->state = MTD_ERASE_PENDING;
 	calc_block_sector(info->addr + info->len, &block0, &block1, &page,
 			  &ofs, docg3->reliable);
-	ret = -EINVAL;
 	if (info->addr + info->len > mtd->size || page || ofs)
-		goto reset_err;
+		return -EINVAL;
 
-	ret = 0;
 	calc_block_sector(info->addr, &block0, &block1, &page, &ofs,
 			  docg3->reliable);
 	mutex_lock(&docg3->cascade->lock);
 	doc_set_device_id(docg3, docg3->device_id);
 	doc_set_reliable_mode(docg3);
 	for (len = info->len; !ret && len > 0; len -= mtd->erasesize) {
-		info->state = MTD_ERASING;
 		ret = doc_erase_block(docg3, block0, block1);
 		block0 += 2;
 		block1 += 2;
 	}
 	mutex_unlock(&docg3->cascade->lock);
 
-	if (ret)
-		goto reset_err;
-
-	info->state = MTD_ERASE_DONE;
-	return 0;
-
-reset_err:
-	info->state = MTD_ERASE_FAILED;
 	return ret;
 }
 
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index 555b944..f67b653 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -414,10 +414,7 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
    while (len)
 	 {
 		if (!erase_block (addr))
-		  {
-			 instr->state = MTD_ERASE_FAILED;
 			 return (-EIO);
-		  }
 
 		addr += mtd->eraseregions[i].erasesize;
 		len -= mtd->eraseregions[i].erasesize;
@@ -425,9 +422,6 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
 		if (addr == mtd->eraseregions[i].offset + (mtd->eraseregions[i].erasesize * mtd->eraseregions[i].numblocks)) i++;
 	 }
 
-   instr->state = MTD_ERASE_DONE;
-   mtd_erase_callback(instr);
-
    return (0);
 }
 
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 5dc8bd0..aaaeaae 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -220,10 +220,6 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
 	}
 	mutex_unlock(&priv->lock);
 
-	/* Inform MTD subsystem that erase is complete */
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c
index 0bf4aea..4623879 100644
--- a/drivers/mtd/devices/mtdram.c
+++ b/drivers/mtd/devices/mtdram.c
@@ -60,8 +60,7 @@ static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
 	if (check_offs_len(mtd, instr->addr, instr->len))
 		return -EINVAL;
 	memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
+
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index 7287696..9ee04b5 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -39,13 +39,6 @@ static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 	memset(start + instr->addr, 0xff, instr->len);
 
-	/*
-	 * This'll catch a few races. Free the thing before returning :)
-	 * I don't feel at all ashamed. This kind of thing is possible anyway
-	 * with flash, but unlikely.
-	 */
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index cadea06..5d842cb 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -184,12 +184,10 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 	}
 
       out:
-	instr->state = MTD_ERASE_DONE;
 #ifdef CONFIG_MTD_PMC551_DEBUG
 	printk(KERN_DEBUG "pmc551_erase() done\n");
 #endif
 
-	mtd_erase_callback(instr);
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index 26f9fea..c1312b1 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -175,19 +175,11 @@ static int powernv_flash_erase(struct mtd_info *mtd, struct erase_info *erase)
 {
 	int rc;
 
-	erase->state = MTD_ERASING;
-
-	/* todo: register our own notifier to do a true async implementation */
 	rc =  powernv_flash_async_op(mtd, FLASH_OP_ERASE, erase->addr,
 			erase->len, NULL, NULL);
-
-	if (rc) {
+	if (rc)
 		erase->fail_addr = erase->addr;
-		erase->state = MTD_ERASE_FAILED;
-	} else {
-		erase->state = MTD_ERASE_DONE;
-	}
-	mtd_erase_callback(erase);
+
 	return rc;
 }
 
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c
index 0ec85f3..10183ee 100644
--- a/drivers/mtd/devices/slram.c
+++ b/drivers/mtd/devices/slram.c
@@ -84,12 +84,7 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr)
 	slram_priv_t *priv = mtd->priv;
 
 	memset(priv->start + instr->addr, 0xff, instr->len);
-	/* This'll catch a few races. Free the thing before returning :)
-	 * I don't feel at all ashamed. This kind of thing is possible anyway
-	 * with flash, but unlikely.
-	 */
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
+
 	return(0);
 }
 
diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index ddf4789..986f81d 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -518,7 +518,6 @@ static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info)
 		/* preparing the command for flash */
 		ret = spear_smi_erase_sector(dev, bank, command, 4);
 		if (ret) {
-			e_info->state = MTD_ERASE_FAILED;
 			mutex_unlock(&flash->lock);
 			return ret;
 		}
@@ -527,8 +526,6 @@ static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info)
 	}
 
 	mutex_unlock(&flash->lock);
-	e_info->state = MTD_ERASE_DONE;
-	mtd_erase_callback(e_info);
 
 	return 0;
 }
diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c
index 5b84d71..1897f33 100644
--- a/drivers/mtd/devices/sst25l.c
+++ b/drivers/mtd/devices/sst25l.c
@@ -195,7 +195,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr)
 		err = sst25l_erase_sector(flash, addr);
 		if (err) {
 			mutex_unlock(&flash->lock);
-			instr->state = MTD_ERASE_FAILED;
 			dev_err(&flash->spi->dev, "Erase failed\n");
 			return err;
 		}
@@ -205,8 +204,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 	mutex_unlock(&flash->lock);
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 	return 0;
 }
 
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 7bc29d7..55d4a77 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -1825,13 +1825,9 @@ static int stfsm_mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 	mutex_unlock(&fsm->lock);
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return 0;
 
 out1:
-	instr->state = MTD_ERASE_FAILED;
 	mutex_unlock(&fsm->lock);
 
 	return ret;
@@ -1868,8 +1864,7 @@ static struct flash_info *stfsm_jedec_probe(struct stfsm *fsm)
 	 */
 	ext_jedec = id[3] << 8  | id[4];
 
-	dev_dbg(fsm->dev, "JEDEC =  0x%08x [%02x %02x %02x %02x %02x]\n",
-		jedec, id[0], id[1], id[2], id[3], id[4]);
+	dev_dbg(fsm->dev, "JEDEC =  0x%08x [%5ph]\n", jedec, id);
 
 	for (info = flash_types; info->name; info++) {
 		if (info->jedec_id == jedec) {
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
index 664d206..ef6ad25 100644
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -140,12 +140,6 @@ typedef struct partition_t {
 #define XFER_PREPARED	0x03
 #define XFER_FAILED	0x04
 
-/*====================================================================*/
-
-
-static void ftl_erase_callback(struct erase_info *done);
-
-
 /*======================================================================
 
     Scan_header() checks to see if a memory region contains an FTL
@@ -348,18 +342,19 @@ static int erase_xfer(partition_t *part,
     if (!erase)
             return -ENOMEM;
 
-    erase->mtd = part->mbd.mtd;
-    erase->callback = ftl_erase_callback;
     erase->addr = xfer->Offset;
     erase->len = 1 << part->header.EraseUnitSize;
-    erase->priv = (u_long)part;
 
     ret = mtd_erase(part->mbd.mtd, erase);
+    if (!ret) {
+	xfer->state = XFER_ERASED;
+	xfer->EraseCount++;
+    } else {
+	xfer->state = XFER_FAILED;
+	pr_notice("ftl_cs: erase failed: err = %d\n", ret);
+    }
 
-    if (!ret)
-	    xfer->EraseCount++;
-    else
-	    kfree(erase);
+    kfree(erase);
 
     return ret;
 } /* erase_xfer */
@@ -371,37 +366,6 @@ static int erase_xfer(partition_t *part,
 
 ======================================================================*/
 
-static void ftl_erase_callback(struct erase_info *erase)
-{
-    partition_t *part;
-    struct xfer_info_t *xfer;
-    int i;
-
-    /* Look up the transfer unit */
-    part = (partition_t *)(erase->priv);
-
-    for (i = 0; i < part->header.NumTransferUnits; i++)
-	if (part->XferInfo[i].Offset == erase->addr) break;
-
-    if (i == part->header.NumTransferUnits) {
-	printk(KERN_NOTICE "ftl_cs: internal error: "
-	       "erase lookup failed!\n");
-	return;
-    }
-
-    xfer = &part->XferInfo[i];
-    if (erase->state == MTD_ERASE_DONE)
-	xfer->state = XFER_ERASED;
-    else {
-	xfer->state = XFER_FAILED;
-	printk(KERN_NOTICE "ftl_cs: erase failed: state = %d\n",
-	       erase->state);
-    }
-
-    kfree(erase);
-
-} /* ftl_erase_callback */
-
 static int prepare_xfer(partition_t *part, int i)
 {
     erase_unit_header_t header;
@@ -429,8 +393,8 @@ static int prepare_xfer(partition_t *part, int i)
     }
 
     /* Write the BAM stub */
-    nbam = (part->BlocksPerUnit * sizeof(uint32_t) +
-	    le32_to_cpu(part->header.BAMOffset) + SECTOR_SIZE - 1) / SECTOR_SIZE;
+    nbam = DIV_ROUND_UP(part->BlocksPerUnit * sizeof(uint32_t) +
+			le32_to_cpu(part->header.BAMOffset), SECTOR_SIZE);
 
     offset = xfer->Offset + le32_to_cpu(part->header.BAMOffset);
     ctl = cpu_to_le32(BLOCK_CONTROL);
diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c
index 8d6bb189..aab4f68 100644
--- a/drivers/mtd/inftlmount.c
+++ b/drivers/mtd/inftlmount.c
@@ -208,8 +208,6 @@ static int find_boot_record(struct INFTLrecord *inftl)
 			if (ip->Reserved0 != ip->firstUnit) {
 				struct erase_info *instr = &inftl->instr;
 
-				instr->mtd = inftl->mbd.mtd;
-
 				/*
 				 * 	Most likely this is using the
 				 * 	undocumented qiuck mount feature.
@@ -385,7 +383,6 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 	   _first_? */
 
 	/* Use async erase interface, test return code */
-	instr->mtd = inftl->mbd.mtd;
 	instr->addr = block * inftl->EraseSize;
 	instr->len = inftl->mbd.mtd->erasesize;
 	/* Erase one physical eraseblock at a time, even though the NAND api
@@ -393,9 +390,10 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 	   mark only the failed block in the bbt. */
 	for (physblock = 0; physblock < inftl->EraseSize;
 	     physblock += instr->len, instr->addr += instr->len) {
-		mtd_erase(inftl->mbd.mtd, instr);
+		int ret;
 
-		if (instr->state == MTD_ERASE_FAILED) {
+		ret = mtd_erase(inftl->mbd.mtd, instr);
+		if (ret) {
 			printk(KERN_WARNING "INFTL: error while formatting block %d\n",
 				block);
 			goto fail;
diff --git a/drivers/mtd/lpddr/lpddr2_nvm.c b/drivers/mtd/lpddr/lpddr2_nvm.c
index 2342277..5d73db2a 100644
--- a/drivers/mtd/lpddr/lpddr2_nvm.c
+++ b/drivers/mtd/lpddr/lpddr2_nvm.c
@@ -380,14 +380,8 @@ static int lpddr2_nvm_write(struct mtd_info *mtd, loff_t start_add,
  */
 static int lpddr2_nvm_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
-	int ret = lpddr2_nvm_do_block_op(mtd, instr->addr, instr->len,
-		LPDDR2_NVM_ERASE);
-	if (!ret) {
-		instr->state = MTD_ERASE_DONE;
-		mtd_erase_callback(instr);
-	}
-
-	return ret;
+	return lpddr2_nvm_do_block_op(mtd, instr->addr, instr->len,
+				      LPDDR2_NVM_ERASE);
 }
 
 /*
diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
index 018c75f..5c5ba3c 100644
--- a/drivers/mtd/lpddr/lpddr_cmds.c
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -693,8 +693,6 @@ static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr)
 		ofs += size;
 		len -= size;
 	}
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 
 	return 0;
 }
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 542fdf8..bdc1283 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -334,16 +334,6 @@
 
 	  If unsure, say N.
 
-config MTD_BFIN_ASYNC
-	tristate "Blackfin BF533-STAMP Flash Chip Support"
-	depends on BFIN533_STAMP && MTD_CFI && MTD_COMPLEX_MAPPINGS
-	default y
-	help
-	  Map driver which allows for simultaneous utilization of
-	  ethernet and CFI parallel flash.
-
-	  If compiled as a module, it will be called bfin-async-flash.
-
 config MTD_GPIO_ADDR
 	tristate "GPIO-assisted Flash Chip Support"
 	depends on GPIOLIB || COMPILE_TEST
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index b849aaf..51acf1f 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -42,7 +42,6 @@
 obj-$(CONFIG_MTD_IXP4XX)	+= ixp4xx.o
 obj-$(CONFIG_MTD_PLATRAM)	+= plat-ram.o
 obj-$(CONFIG_MTD_INTEL_VR_NOR)	+= intel_vr_nor.o
-obj-$(CONFIG_MTD_BFIN_ASYNC)	+= bfin-async-flash.o
 obj-$(CONFIG_MTD_RBTX4939)	+= rbtx4939-flash.o
 obj-$(CONFIG_MTD_VMU)		+= vmu-flash.o
 obj-$(CONFIG_MTD_GPIO_ADDR)	+= gpio-addr-flash.o
diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c
deleted file mode 100644
index 41730fe..0000000
--- a/drivers/mtd/maps/bfin-async-flash.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * drivers/mtd/maps/bfin-async-flash.c
- *
- * Handle the case where flash memory and ethernet mac/phy are
- * mapped onto the same async bank.  The BF533-STAMP does this
- * for example.  All board-specific configuration goes in your
- * board resources file.
- *
- * Copyright 2000 Nicolas Pitre <nico@fluxnic.net>
- * Copyright 2005-2008 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/physmap.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-
-#include <asm/blackfin.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-#include <asm/unaligned.h>
-
-#define pr_devinit(fmt, args...) \
-		({ static const char __fmt[] = fmt; printk(__fmt, ## args); })
-
-#define DRIVER_NAME "bfin-async-flash"
-
-struct async_state {
-	struct mtd_info *mtd;
-	struct map_info map;
-	int enet_flash_pin;
-	uint32_t flash_ambctl0, flash_ambctl1;
-	uint32_t save_ambctl0, save_ambctl1;
-	unsigned long irq_flags;
-};
-
-static void switch_to_flash(struct async_state *state)
-{
-	local_irq_save(state->irq_flags);
-
-	gpio_set_value(state->enet_flash_pin, 0);
-
-	state->save_ambctl0 = bfin_read_EBIU_AMBCTL0();
-	state->save_ambctl1 = bfin_read_EBIU_AMBCTL1();
-	bfin_write_EBIU_AMBCTL0(state->flash_ambctl0);
-	bfin_write_EBIU_AMBCTL1(state->flash_ambctl1);
-	SSYNC();
-}
-
-static void switch_back(struct async_state *state)
-{
-	bfin_write_EBIU_AMBCTL0(state->save_ambctl0);
-	bfin_write_EBIU_AMBCTL1(state->save_ambctl1);
-	SSYNC();
-
-	gpio_set_value(state->enet_flash_pin, 1);
-
-	local_irq_restore(state->irq_flags);
-}
-
-static map_word bfin_flash_read(struct map_info *map, unsigned long ofs)
-{
-	struct async_state *state = (struct async_state *)map->map_priv_1;
-	uint16_t word;
-	map_word test;
-
-	switch_to_flash(state);
-
-	word = readw(map->virt + ofs);
-
-	switch_back(state);
-
-	test.x[0] = word;
-	return test;
-}
-
-static void bfin_flash_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
-	struct async_state *state = (struct async_state *)map->map_priv_1;
-
-	switch_to_flash(state);
-
-	memcpy(to, map->virt + from, len);
-
-	switch_back(state);
-}
-
-static void bfin_flash_write(struct map_info *map, map_word d1, unsigned long ofs)
-{
-	struct async_state *state = (struct async_state *)map->map_priv_1;
-	uint16_t d;
-
-	d = d1.x[0];
-
-	switch_to_flash(state);
-
-	writew(d, map->virt + ofs);
-	SSYNC();
-
-	switch_back(state);
-}
-
-static void bfin_flash_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
-{
-	struct async_state *state = (struct async_state *)map->map_priv_1;
-
-	switch_to_flash(state);
-
-	memcpy(map->virt + to, from, len);
-	SSYNC();
-
-	switch_back(state);
-}
-
-static const char * const part_probe_types[] = {
-	"cmdlinepart", "RedBoot", NULL };
-
-static int bfin_flash_probe(struct platform_device *pdev)
-{
-	struct physmap_flash_data *pdata = dev_get_platdata(&pdev->dev);
-	struct resource *memory = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	struct resource *flash_ambctl = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	struct async_state *state;
-
-	state = kzalloc(sizeof(*state), GFP_KERNEL);
-	if (!state)
-		return -ENOMEM;
-
-	state->map.name       = DRIVER_NAME;
-	state->map.read       = bfin_flash_read;
-	state->map.copy_from  = bfin_flash_copy_from;
-	state->map.write      = bfin_flash_write;
-	state->map.copy_to    = bfin_flash_copy_to;
-	state->map.bankwidth  = pdata->width;
-	state->map.size       = resource_size(memory);
-	state->map.virt       = (void __iomem *)memory->start;
-	state->map.phys       = memory->start;
-	state->map.map_priv_1 = (unsigned long)state;
-	state->enet_flash_pin = platform_get_irq(pdev, 0);
-	state->flash_ambctl0  = flash_ambctl->start;
-	state->flash_ambctl1  = flash_ambctl->end;
-
-	if (gpio_request(state->enet_flash_pin, DRIVER_NAME)) {
-		pr_devinit(KERN_ERR DRIVER_NAME ": Failed to request gpio %d\n", state->enet_flash_pin);
-		kfree(state);
-		return -EBUSY;
-	}
-	gpio_direction_output(state->enet_flash_pin, 1);
-
-	pr_devinit(KERN_NOTICE DRIVER_NAME ": probing %d-bit flash bus\n", state->map.bankwidth * 8);
-	state->mtd = do_map_probe(memory->name, &state->map);
-	if (!state->mtd) {
-		gpio_free(state->enet_flash_pin);
-		kfree(state);
-		return -ENXIO;
-	}
-
-	mtd_device_parse_register(state->mtd, part_probe_types, NULL,
-				  pdata->parts, pdata->nr_parts);
-
-	platform_set_drvdata(pdev, state);
-
-	return 0;
-}
-
-static int bfin_flash_remove(struct platform_device *pdev)
-{
-	struct async_state *state = platform_get_drvdata(pdev);
-	gpio_free(state->enet_flash_pin);
-	mtd_device_unregister(state->mtd);
-	map_destroy(state->mtd);
-	kfree(state);
-	return 0;
-}
-
-static struct platform_driver bfin_flash_driver = {
-	.probe		= bfin_flash_probe,
-	.remove		= bfin_flash_remove,
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-};
-
-module_platform_driver(bfin_flash_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("MTD map driver for Blackfins with flash/ethernet on same async bank");
diff --git a/drivers/mtd/maps/physmap_of_core.c b/drivers/mtd/maps/physmap_of_core.c
index b1bd4fa..527b168 100644
--- a/drivers/mtd/maps/physmap_of_core.c
+++ b/drivers/mtd/maps/physmap_of_core.c
@@ -20,6 +20,7 @@
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/concat.h>
+#include <linux/mtd/cfi_endian.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
@@ -233,6 +234,11 @@ static int of_flash_probe(struct platform_device *dev)
 		info->list[i].map.bankwidth = be32_to_cpup(width);
 		info->list[i].map.device_node = dp;
 
+		if (of_property_read_bool(dp, "big-endian"))
+			info->list[i].map.swap = CFI_BIG_ENDIAN;
+		else if (of_property_read_bool(dp, "little-endian"))
+			info->list[i].map.swap = CFI_LITTLE_ENDIAN;
+
 		err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
 		if (err)
 			goto err_out;
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index bb4c14f..a5b1933 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -55,48 +55,27 @@ struct mtdblk_dev {
  * being written to until a different sector is required.
  */
 
-static void erase_callback(struct erase_info *done)
-{
-	wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
-	wake_up(wait_q);
-}
-
 static int erase_write (struct mtd_info *mtd, unsigned long pos,
 			int len, const char *buf)
 {
 	struct erase_info erase;
-	DECLARE_WAITQUEUE(wait, current);
-	wait_queue_head_t wait_q;
 	size_t retlen;
 	int ret;
 
 	/*
 	 * First, let's erase the flash block.
 	 */
-
-	init_waitqueue_head(&wait_q);
-	erase.mtd = mtd;
-	erase.callback = erase_callback;
 	erase.addr = pos;
 	erase.len = len;
-	erase.priv = (u_long)&wait_q;
-
-	set_current_state(TASK_INTERRUPTIBLE);
-	add_wait_queue(&wait_q, &wait);
 
 	ret = mtd_erase(mtd, &erase);
 	if (ret) {
-		set_current_state(TASK_RUNNING);
-		remove_wait_queue(&wait_q, &wait);
 		printk (KERN_WARNING "mtdblock: erase of region [0x%lx, 0x%x] "
 				     "on \"%s\" failed\n",
 			pos, len, mtd->name);
 		return ret;
 	}
 
-	schedule();  /* Wait for erase to finish. */
-	remove_wait_queue(&wait_q, &wait);
-
 	/*
 	 * Next, write the data to flash.
 	 */
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index de8c902..c06b33f 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -324,10 +324,6 @@ static ssize_t mtdchar_write(struct file *file, const char __user *buf, size_t c
     IOCTL calls for getting device parameters.
 
 ======================================================================*/
-static void mtdchar_erase_callback (struct erase_info *instr)
-{
-	wake_up((wait_queue_head_t *)instr->priv);
-}
 
 static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
 {
@@ -709,11 +705,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 		if (!erase)
 			ret = -ENOMEM;
 		else {
-			wait_queue_head_t waitq;
-			DECLARE_WAITQUEUE(wait, current);
-
-			init_waitqueue_head(&waitq);
-
 			if (cmd == MEMERASE64) {
 				struct erase_info_user64 einfo64;
 
@@ -735,31 +726,8 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 				erase->addr = einfo32.start;
 				erase->len = einfo32.length;
 			}
-			erase->mtd = mtd;
-			erase->callback = mtdchar_erase_callback;
-			erase->priv = (unsigned long)&waitq;
 
-			/*
-			  FIXME: Allow INTERRUPTIBLE. Which means
-			  not having the wait_queue head on the stack.
-
-			  If the wq_head is on the stack, and we
-			  leave because we got interrupted, then the
-			  wq_head is no longer there when the
-			  callback routine tries to wake us up.
-			*/
 			ret = mtd_erase(mtd, erase);
-			if (!ret) {
-				set_current_state(TASK_UNINTERRUPTIBLE);
-				add_wait_queue(&waitq, &wait);
-				if (erase->state != MTD_ERASE_DONE &&
-				    erase->state != MTD_ERASE_FAILED)
-					schedule();
-				remove_wait_queue(&waitq, &wait);
-				set_current_state(TASK_RUNNING);
-
-				ret = (erase->state == MTD_ERASE_FAILED)?-EIO:0;
-			}
 			kfree(erase);
 		}
 		break;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 60bf53d..6b86d1a 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -333,45 +333,6 @@ concat_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops)
 	return -EINVAL;
 }
 
-static void concat_erase_callback(struct erase_info *instr)
-{
-	wake_up((wait_queue_head_t *) instr->priv);
-}
-
-static int concat_dev_erase(struct mtd_info *mtd, struct erase_info *erase)
-{
-	int err;
-	wait_queue_head_t waitq;
-	DECLARE_WAITQUEUE(wait, current);
-
-	/*
-	 * This code was stol^H^H^H^Hinspired by mtdchar.c
-	 */
-	init_waitqueue_head(&waitq);
-
-	erase->mtd = mtd;
-	erase->callback = concat_erase_callback;
-	erase->priv = (unsigned long) &waitq;
-
-	/*
-	 * FIXME: Allow INTERRUPTIBLE. Which means
-	 * not having the wait_queue head on the stack.
-	 */
-	err = mtd_erase(mtd, erase);
-	if (!err) {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		add_wait_queue(&waitq, &wait);
-		if (erase->state != MTD_ERASE_DONE
-		    && erase->state != MTD_ERASE_FAILED)
-			schedule();
-		remove_wait_queue(&waitq, &wait);
-		set_current_state(TASK_RUNNING);
-
-		err = (erase->state == MTD_ERASE_FAILED) ? -EIO : 0;
-	}
-	return err;
-}
-
 static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
 	struct mtd_concat *concat = CONCAT(mtd);
@@ -466,7 +427,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
 			erase->len = length;
 
 		length -= erase->len;
-		if ((err = concat_dev_erase(subdev, erase))) {
+		if ((err = mtd_erase(subdev, erase))) {
 			/* sanity check: should never happen since
 			 * block alignment has been checked above */
 			BUG_ON(err == -EINVAL);
@@ -485,14 +446,9 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
 		erase->addr = 0;
 		offset += subdev->size;
 	}
-	instr->state = erase->state;
 	kfree(erase);
-	if (err)
-		return err;
 
-	if (instr->callback)
-		instr->callback(instr);
-	return 0;
+	return err;
 }
 
 static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 28553c8..807d17d 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -419,7 +419,7 @@ int mtd_wunit_to_pairing_info(struct mtd_info *mtd, int wunit,
 EXPORT_SYMBOL_GPL(mtd_wunit_to_pairing_info);
 
 /**
- * mtd_wunit_to_pairing_info - get wunit from pairing information
+ * mtd_pairing_info_to_wunit - get wunit from pairing information
  * @mtd: pointer to new MTD device info structure
  * @info: pairing information struct
  *
@@ -641,29 +641,6 @@ int del_mtd_device(struct mtd_info *mtd)
 	return ret;
 }
 
-static int mtd_add_device_partitions(struct mtd_info *mtd,
-				     struct mtd_partitions *parts)
-{
-	const struct mtd_partition *real_parts = parts->parts;
-	int nbparts = parts->nr_parts;
-	int ret;
-
-	if (nbparts == 0 || IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
-		ret = add_mtd_device(mtd);
-		if (ret)
-			return ret;
-	}
-
-	if (nbparts > 0) {
-		ret = add_mtd_partitions(mtd, real_parts, nbparts);
-		if (ret && IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER))
-			del_mtd_device(mtd);
-		return ret;
-	}
-
-	return 0;
-}
-
 /*
  * Set a few defaults based on the parent devices, if not provided by the
  * driver
@@ -696,14 +673,13 @@ static void mtd_set_dev_defaults(struct mtd_info *mtd)
  * 'parse_mtd_partitions()') and MTD device and partitions registering. It
  * basically follows the most common pattern found in many MTD drivers:
  *
- * * It first tries to probe partitions on MTD device @mtd using parsers
+ * * If the MTD_PARTITIONED_MASTER option is set, then the device as a whole is
+ *   registered first.
+ * * Then It tries to probe partitions on MTD device @mtd using parsers
  *   specified in @types (if @types is %NULL, then the default list of parsers
  *   is used, see 'parse_mtd_partitions()' for more information). If none are
  *   found this functions tries to fallback to information specified in
  *   @parts/@nr_parts.
- * * If any partitioning info was found, this function registers the found
- *   partitions. If the MTD_PARTITIONED_MASTER option is set, then the device
- *   as a whole is registered first.
  * * If no partitions were found this function just registers the MTD device
  *   @mtd and exits.
  *
@@ -714,29 +690,31 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
 			      const struct mtd_partition *parts,
 			      int nr_parts)
 {
-	struct mtd_partitions parsed;
+	struct mtd_partitions parsed = { };
 	int ret;
 
 	mtd_set_dev_defaults(mtd);
 
-	memset(&parsed, 0, sizeof(parsed));
-
-	ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);
-	if ((ret < 0 || parsed.nr_parts == 0) && parts && nr_parts) {
-		/* Fall back to driver-provided partitions */
-		parsed = (struct mtd_partitions){
-			.parts		= parts,
-			.nr_parts	= nr_parts,
-		};
-	} else if (ret < 0) {
-		/* Didn't come up with parsed OR fallback partitions */
-		pr_info("mtd: failed to find partitions; one or more parsers reports errors (%d)\n",
-			ret);
-		/* Don't abort on errors; we can still use unpartitioned MTD */
-		memset(&parsed, 0, sizeof(parsed));
+	if (IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
+		ret = add_mtd_device(mtd);
+		if (ret)
+			return ret;
 	}
 
-	ret = mtd_add_device_partitions(mtd, &parsed);
+	/* Prefer parsed partitions over driver-provided fallback */
+	ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);
+	if (!ret && parsed.nr_parts) {
+		parts = parsed.parts;
+		nr_parts = parsed.nr_parts;
+	}
+
+	if (nr_parts)
+		ret = add_mtd_partitions(mtd, parts, nr_parts);
+	else if (!device_is_registered(&mtd->dev))
+		ret = add_mtd_device(mtd);
+	else
+		ret = 0;
+
 	if (ret)
 		goto out;
 
@@ -758,6 +736,9 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
 out:
 	/* Cleanup any parsed partitions */
 	mtd_part_parser_cleanup(&parsed);
+	if (ret && device_is_registered(&mtd->dev))
+		del_mtd_device(mtd);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(mtd_device_parse_register);
@@ -963,24 +944,25 @@ void __put_mtd_device(struct mtd_info *mtd)
 EXPORT_SYMBOL_GPL(__put_mtd_device);
 
 /*
- * Erase is an asynchronous operation.  Device drivers are supposed
- * to call instr->callback() whenever the operation completes, even
- * if it completes with a failure.
- * Callers are supposed to pass a callback function and wait for it
- * to be called before writing to the block.
+ * Erase is an synchronous operation. Device drivers are epected to return a
+ * negative error code if the operation failed and update instr->fail_addr
+ * to point the portion that was not properly erased.
  */
 int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
+	instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+
+	if (!mtd->erasesize || !mtd->_erase)
+		return -ENOTSUPP;
+
 	if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr)
 		return -EINVAL;
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
-	instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-	if (!instr->len) {
-		instr->state = MTD_ERASE_DONE;
-		mtd_erase_callback(instr);
+
+	if (!instr->len)
 		return 0;
-	}
+
 	ledtrig_mtd_activity();
 	return mtd->_erase(mtd, instr);
 }
@@ -1525,9 +1507,9 @@ int mtd_ooblayout_get_databytes(struct mtd_info *mtd, u8 *databuf,
 EXPORT_SYMBOL_GPL(mtd_ooblayout_get_databytes);
 
 /**
- * mtd_ooblayout_get_eccbytes - set data bytes into the oob buffer
+ * mtd_ooblayout_set_databytes - set data bytes into the oob buffer
  * @mtd: mtd info structure
- * @eccbuf: source buffer to get data bytes from
+ * @databuf: source buffer to get data bytes from
  * @oobbuf: OOB buffer
  * @start: first ECC byte to set
  * @nbytes: number of ECC bytes to set
@@ -1559,7 +1541,7 @@ int mtd_ooblayout_count_freebytes(struct mtd_info *mtd)
 EXPORT_SYMBOL_GPL(mtd_ooblayout_count_freebytes);
 
 /**
- * mtd_ooblayout_count_freebytes - count the number of ECC bytes in OOB
+ * mtd_ooblayout_count_eccbytes - count the number of ECC bytes in OOB
  * @mtd: mtd info structure
  *
  * Works like mtd_ooblayout_count_bytes(), except it count ECC bytes.
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 97bb8f6..9f25111 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -84,12 +84,6 @@ static int page_is_used(struct mtdoops_context *cxt, int page)
 	return test_bit(page, cxt->oops_page_used);
 }
 
-static void mtdoops_erase_callback(struct erase_info *done)
-{
-	wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
-	wake_up(wait_q);
-}
-
 static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset)
 {
 	struct mtd_info *mtd = cxt->mtd;
@@ -97,34 +91,20 @@ static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset)
 	u32 start_page = start_page_offset / record_size;
 	u32 erase_pages = mtd->erasesize / record_size;
 	struct erase_info erase;
-	DECLARE_WAITQUEUE(wait, current);
-	wait_queue_head_t wait_q;
 	int ret;
 	int page;
 
-	init_waitqueue_head(&wait_q);
-	erase.mtd = mtd;
-	erase.callback = mtdoops_erase_callback;
 	erase.addr = offset;
 	erase.len = mtd->erasesize;
-	erase.priv = (u_long)&wait_q;
-
-	set_current_state(TASK_INTERRUPTIBLE);
-	add_wait_queue(&wait_q, &wait);
 
 	ret = mtd_erase(mtd, &erase);
 	if (ret) {
-		set_current_state(TASK_RUNNING);
-		remove_wait_queue(&wait_q, &wait);
 		printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n",
 		       (unsigned long long)erase.addr,
 		       (unsigned long long)erase.len, mtddev);
 		return ret;
 	}
 
-	schedule();  /* Wait for erase to finish. */
-	remove_wait_queue(&wait_q, &wait);
-
 	/* Mark pages as unused */
 	for (page = start_page; page < start_page + erase_pages; page++)
 		mark_page_unused(cxt, page);
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 76cd21d..023516a 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -30,6 +30,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/err.h>
+#include <linux/of.h>
 
 #include "mtdcore.h"
 
@@ -205,28 +206,13 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 	instr->addr += part->offset;
 	ret = part->parent->_erase(part->parent, instr);
-	if (ret) {
-		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
-			instr->fail_addr -= part->offset;
-		instr->addr -= part->offset;
-	}
+	if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
+		instr->fail_addr -= part->offset;
+	instr->addr -= part->offset;
+
 	return ret;
 }
 
-void mtd_erase_callback(struct erase_info *instr)
-{
-	if (instr->mtd->_erase == part_erase) {
-		struct mtd_part *part = mtd_to_part(instr->mtd);
-
-		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
-			instr->fail_addr -= part->offset;
-		instr->addr -= part->offset;
-	}
-	if (instr->callback)
-		instr->callback(instr);
-}
-EXPORT_SYMBOL_GPL(mtd_erase_callback);
-
 static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
 	struct mtd_part *part = mtd_to_part(mtd);
@@ -861,6 +847,92 @@ static int mtd_part_do_parse(struct mtd_part_parser *parser,
 }
 
 /**
+ * mtd_part_get_compatible_parser - find MTD parser by a compatible string
+ *
+ * @compat: compatible string describing partitions in a device tree
+ *
+ * MTD parsers can specify supported partitions by providing a table of
+ * compatibility strings. This function finds a parser that advertises support
+ * for a passed value of "compatible".
+ */
+static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat)
+{
+	struct mtd_part_parser *p, *ret = NULL;
+
+	spin_lock(&part_parser_lock);
+
+	list_for_each_entry(p, &part_parsers, list) {
+		const struct of_device_id *matches;
+
+		matches = p->of_match_table;
+		if (!matches)
+			continue;
+
+		for (; matches->compatible[0]; matches++) {
+			if (!strcmp(matches->compatible, compat) &&
+			    try_module_get(p->owner)) {
+				ret = p;
+				break;
+			}
+		}
+
+		if (ret)
+			break;
+	}
+
+	spin_unlock(&part_parser_lock);
+
+	return ret;
+}
+
+static int mtd_part_of_parse(struct mtd_info *master,
+			     struct mtd_partitions *pparts)
+{
+	struct mtd_part_parser *parser;
+	struct device_node *np;
+	struct property *prop;
+	const char *compat;
+	const char *fixed = "fixed-partitions";
+	int ret, err = 0;
+
+	np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
+	of_property_for_each_string(np, "compatible", prop, compat) {
+		parser = mtd_part_get_compatible_parser(compat);
+		if (!parser)
+			continue;
+		ret = mtd_part_do_parse(parser, master, pparts, NULL);
+		if (ret > 0) {
+			of_node_put(np);
+			return ret;
+		}
+		mtd_part_parser_put(parser);
+		if (ret < 0 && !err)
+			err = ret;
+	}
+	of_node_put(np);
+
+	/*
+	 * For backward compatibility we have to try the "fixed-partitions"
+	 * parser. It supports old DT format with partitions specified as a
+	 * direct subnodes of a flash device DT node without any compatibility
+	 * specified we could match.
+	 */
+	parser = mtd_part_parser_get(fixed);
+	if (!parser && !request_module("%s", fixed))
+		parser = mtd_part_parser_get(fixed);
+	if (parser) {
+		ret = mtd_part_do_parse(parser, master, pparts, NULL);
+		if (ret > 0)
+			return ret;
+		mtd_part_parser_put(parser);
+		if (ret < 0 && !err)
+			err = ret;
+	}
+
+	return err;
+}
+
+/**
  * parse_mtd_partitions - parse MTD partitions
  * @master: the master partition (describes whole MTD device)
  * @types: names of partition parsers to try or %NULL
@@ -892,19 +964,30 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
 		types = default_mtd_part_types;
 
 	for ( ; *types; types++) {
-		pr_debug("%s: parsing partitions %s\n", master->name, *types);
-		parser = mtd_part_parser_get(*types);
-		if (!parser && !request_module("%s", *types))
+		/*
+		 * ofpart is a special type that means OF partitioning info
+		 * should be used. It requires a bit different logic so it is
+		 * handled in a separated function.
+		 */
+		if (!strcmp(*types, "ofpart")) {
+			ret = mtd_part_of_parse(master, pparts);
+		} else {
+			pr_debug("%s: parsing partitions %s\n", master->name,
+				 *types);
 			parser = mtd_part_parser_get(*types);
-		pr_debug("%s: got parser %s\n", master->name,
-			 parser ? parser->name : NULL);
-		if (!parser)
-			continue;
-		ret = mtd_part_do_parse(parser, master, pparts, data);
+			if (!parser && !request_module("%s", *types))
+				parser = mtd_part_parser_get(*types);
+			pr_debug("%s: got parser %s\n", master->name,
+				parser ? parser->name : NULL);
+			if (!parser)
+				continue;
+			ret = mtd_part_do_parse(parser, master, pparts, data);
+			if (ret <= 0)
+				mtd_part_parser_put(parser);
+		}
 		/* Found partitions! */
 		if (ret > 0)
 			return 0;
-		mtd_part_parser_put(parser);
 		/*
 		 * Stash the first error we see; only report it if no parser
 		 * succeeds
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index 7eb0e1f..7161f8a 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -536,18 +536,10 @@ static void mtdswap_store_eb(struct mtdswap_dev *d, struct swap_eb *eb)
 		mtdswap_rb_add(d, eb, MTDSWAP_HIFRAG);
 }
 
-
-static void mtdswap_erase_callback(struct erase_info *done)
-{
-	wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
-	wake_up(wait_q);
-}
-
 static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb)
 {
 	struct mtd_info *mtd = d->mtd;
 	struct erase_info erase;
-	wait_queue_head_t wq;
 	unsigned int retries = 0;
 	int ret;
 
@@ -556,14 +548,9 @@ static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb)
 		d->max_erase_count = eb->erase_count;
 
 retry:
-	init_waitqueue_head(&wq);
 	memset(&erase, 0, sizeof(struct erase_info));
-
-	erase.mtd	= mtd;
-	erase.callback	= mtdswap_erase_callback;
 	erase.addr	= mtdswap_eb_offset(d, eb);
 	erase.len	= mtd->erasesize;
-	erase.priv	= (u_long)&wq;
 
 	ret = mtd_erase(mtd, &erase);
 	if (ret) {
@@ -582,27 +569,6 @@ static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb)
 		return -EIO;
 	}
 
-	ret = wait_event_interruptible(wq, erase.state == MTD_ERASE_DONE ||
-					   erase.state == MTD_ERASE_FAILED);
-	if (ret) {
-		dev_err(d->dev, "Interrupted erase block %#llx erasure on %s\n",
-			erase.addr, mtd->name);
-		return -EINTR;
-	}
-
-	if (erase.state == MTD_ERASE_FAILED) {
-		if (retries++ < MTDSWAP_ERASE_RETRIES) {
-			dev_warn(d->dev,
-				"erase of erase block %#llx on %s failed",
-				erase.addr, mtd->name);
-			yield();
-			goto retry;
-		}
-
-		mtdswap_handle_badblock(d, eb);
-		return -EIO;
-	}
-
 	return 0;
 }
 
diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c
index 05907b1..b710519 100644
--- a/drivers/mtd/nand/onenand/onenand_base.c
+++ b/drivers/mtd/nand/onenand/onenand_base.c
@@ -2141,7 +2141,6 @@ static int onenand_multiblock_erase_verify(struct mtd_info *mtd,
 		if (ret) {
 			printk(KERN_ERR "%s: Failed verify, block %d\n",
 			       __func__, onenand_block(this, addr));
-			instr->state = MTD_ERASE_FAILED;
 			instr->fail_addr = addr;
 			return -1;
 		}
@@ -2170,8 +2169,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd,
 	int ret = 0;
 	int bdry_block = 0;
 
-	instr->state = MTD_ERASING;
-
 	if (ONENAND_IS_DDP(this)) {
 		loff_t bdry_addr = this->chipsize >> 1;
 		if (addr < bdry_addr && (addr + len) > bdry_addr)
@@ -2185,7 +2182,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd,
 			printk(KERN_WARNING "%s: attempt to erase a bad block "
 			       "at addr 0x%012llx\n",
 			       __func__, (unsigned long long) addr);
-			instr->state = MTD_ERASE_FAILED;
 			return -EIO;
 		}
 		len -= block_size;
@@ -2225,7 +2221,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd,
 				printk(KERN_ERR "%s: Failed multiblock erase, "
 				       "block %d\n", __func__,
 				       onenand_block(this, addr));
-				instr->state = MTD_ERASE_FAILED;
 				instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
 				return -EIO;
 			}
@@ -2245,7 +2240,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd,
 		if (ret) {
 			printk(KERN_ERR "%s: Failed erase, block %d\n",
 			       __func__, onenand_block(this, addr));
-			instr->state = MTD_ERASE_FAILED;
 			instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
 			return -EIO;
 		}
@@ -2257,7 +2251,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd,
 		/* verify */
 		verify_instr.len = eb_count * block_size;
 		if (onenand_multiblock_erase_verify(mtd, &verify_instr)) {
-			instr->state = verify_instr.state;
 			instr->fail_addr = verify_instr.fail_addr;
 			return -EIO;
 		}
@@ -2292,8 +2285,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd,
 		region_end = region->offset + region->erasesize * region->numblocks;
 	}
 
-	instr->state = MTD_ERASING;
-
 	/* Loop through the blocks */
 	while (len) {
 		cond_resched();
@@ -2303,7 +2294,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd,
 			printk(KERN_WARNING "%s: attempt to erase a bad block "
 					"at addr 0x%012llx\n",
 					__func__, (unsigned long long) addr);
-			instr->state = MTD_ERASE_FAILED;
 			return -EIO;
 		}
 
@@ -2316,7 +2306,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd,
 		if (ret) {
 			printk(KERN_ERR "%s: Failed erase, block %d\n",
 				__func__, onenand_block(this, addr));
-			instr->state = MTD_ERASE_FAILED;
 			instr->fail_addr = addr;
 			return -EIO;
 		}
@@ -2405,12 +2394,6 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
 	/* Deselect and wake up anyone waiting on the device */
 	onenand_release_device(mtd);
 
-	/* Do call back function */
-	if (!ret) {
-		instr->state = MTD_ERASE_DONE;
-		mtd_erase_callback(instr);
-	}
-
 	return ret;
 }
 
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index d0b993f..72f3a89 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -527,7 +527,6 @@ static int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs)
 
 		/* Attempt erase before marking OOB */
 		memset(&einfo, 0, sizeof(einfo));
-		einfo.mtd = mtd;
 		einfo.addr = ofs;
 		einfo.len = 1ULL << chip->phys_erase_shift;
 		nand_erase_nand(mtd, &einfo, 0);
@@ -4695,22 +4694,20 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
 	if (nand_check_wp(mtd)) {
 		pr_debug("%s: device is write protected!\n",
 				__func__);
-		instr->state = MTD_ERASE_FAILED;
+		ret = -EIO;
 		goto erase_exit;
 	}
 
 	/* Loop through the pages */
 	len = instr->len;
 
-	instr->state = MTD_ERASING;
-
 	while (len) {
 		/* Check if we have a bad block, we do not erase bad blocks! */
 		if (nand_block_checkbad(mtd, ((loff_t) page) <<
 					chip->page_shift, allowbbt)) {
 			pr_warn("%s: attempt to erase a bad block at page 0x%08x\n",
 				    __func__, page);
-			instr->state = MTD_ERASE_FAILED;
+			ret = -EIO;
 			goto erase_exit;
 		}
 
@@ -4728,7 +4725,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
 		if (status) {
 			pr_debug("%s: failed erase, page 0x%08x\n",
 					__func__, page);
-			instr->state = MTD_ERASE_FAILED;
+			ret = -EIO;
 			instr->fail_addr =
 				((loff_t)page << chip->page_shift);
 			goto erase_exit;
@@ -4745,20 +4742,14 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
 			chip->select_chip(mtd, chipnr);
 		}
 	}
-	instr->state = MTD_ERASE_DONE;
 
+	ret = 0;
 erase_exit:
 
-	ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
-
 	/* Deselect and wake up anyone waiting on the device */
 	chip->select_chip(mtd, -1);
 	nand_release_device(mtd);
 
-	/* Do call back function */
-	if (!ret)
-		mtd_erase_callback(instr);
-
 	/* Return more or less happy */
 	return ret;
 }
diff --git a/drivers/mtd/nand/raw/nand_bbt.c b/drivers/mtd/nand/raw/nand_bbt.c
index 3609285..d9f4cef 100644
--- a/drivers/mtd/nand/raw/nand_bbt.c
+++ b/drivers/mtd/nand/raw/nand_bbt.c
@@ -852,7 +852,6 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
 		}
 
 		memset(&einfo, 0, sizeof(einfo));
-		einfo.mtd = mtd;
 		einfo.addr = to;
 		einfo.len = 1 << this->bbt_erase_shift;
 		res = nand_erase_nand(mtd, &einfo, 1);
diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
index 184c8fb..a6fbfa4 100644
--- a/drivers/mtd/nftlmount.c
+++ b/drivers/mtd/nftlmount.c
@@ -122,8 +122,7 @@ static int find_boot_record(struct NFTLrecord *nftl)
 		if (memcmp(buf, "ANAND", 6)) {
 			printk(KERN_NOTICE "ANAND header found at 0x%x in mtd%d, but went away on reread!\n",
 			       block * nftl->EraseSize, nftl->mbd.mtd->index);
-			printk(KERN_NOTICE "New data are: %02x %02x %02x %02x %02x %02x\n",
-			       buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
+			printk(KERN_NOTICE "New data are: %6ph\n", buf);
 			continue;
 		}
 #endif
@@ -328,12 +327,9 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block)
 	memset(instr, 0, sizeof(struct erase_info));
 
 	/* XXX: use async erase interface, XXX: test return code */
-	instr->mtd = nftl->mbd.mtd;
 	instr->addr = block * nftl->EraseSize;
 	instr->len = nftl->EraseSize;
-	mtd_erase(mtd, instr);
-
-	if (instr->state == MTD_ERASE_FAILED) {
+	if (mtd_erase(mtd, instr)) {
 		printk("Error while formatting block %d\n", block);
 		goto fail;
 	}
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index 6bdf4e5..615f8c1 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -25,9 +25,9 @@ static bool node_has_compatible(struct device_node *pp)
 	return of_get_property(pp, "compatible", NULL);
 }
 
-static int parse_ofpart_partitions(struct mtd_info *master,
-				   const struct mtd_partition **pparts,
-				   struct mtd_part_parser_data *data)
+static int parse_fixed_partitions(struct mtd_info *master,
+				  const struct mtd_partition **pparts,
+				  struct mtd_part_parser_data *data)
 {
 	struct mtd_partition *parts;
 	struct device_node *mtd_node;
@@ -140,9 +140,16 @@ static int parse_ofpart_partitions(struct mtd_info *master,
 	return ret;
 }
 
+static const struct of_device_id parse_ofpart_match_table[] = {
+	{ .compatible = "fixed-partitions" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, parse_ofpart_match_table);
+
 static struct mtd_part_parser ofpart_parser = {
-	.parse_fn = parse_ofpart_partitions,
-	.name = "ofpart",
+	.parse_fn = parse_fixed_partitions,
+	.name = "fixed-partitions",
+	.of_match_table = parse_ofpart_match_table,
 };
 
 static int parse_ofoldpart_partitions(struct mtd_info *master,
@@ -229,4 +236,5 @@ MODULE_AUTHOR("Vitaly Wool, David Gibson");
  * with the same name. Since we provide the ofoldpart parser, we should have
  * the corresponding alias.
  */
+MODULE_ALIAS("fixed-partitions");
 MODULE_ALIAS("ofoldpart");
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index d1cbf26..df27f24 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -266,91 +266,54 @@ static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *b
 	return 0;
 }
 
-static void erase_callback(struct erase_info *erase)
-{
-	struct partition *part;
-	u16 magic;
-	int i, rc;
-	size_t retlen;
-
-	part = (struct partition*)erase->priv;
-
-	i = (u32)erase->addr / part->block_size;
-	if (i >= part->total_blocks || part->blocks[i].offset != erase->addr ||
-	    erase->addr > UINT_MAX) {
-		printk(KERN_ERR PREFIX "erase callback for unknown offset %llx "
-				"on '%s'\n", (unsigned long long)erase->addr, part->mbd.mtd->name);
-		return;
-	}
-
-	if (erase->state != MTD_ERASE_DONE) {
-		printk(KERN_WARNING PREFIX "erase failed at 0x%llx on '%s', "
-				"state %d\n", (unsigned long long)erase->addr,
-				part->mbd.mtd->name, erase->state);
-
-		part->blocks[i].state = BLOCK_FAILED;
-		part->blocks[i].free_sectors = 0;
-		part->blocks[i].used_sectors = 0;
-
-		kfree(erase);
-
-		return;
-	}
-
-	magic = cpu_to_le16(RFD_MAGIC);
-
-	part->blocks[i].state = BLOCK_ERASED;
-	part->blocks[i].free_sectors = part->data_sectors_per_block;
-	part->blocks[i].used_sectors = 0;
-	part->blocks[i].erases++;
-
-	rc = mtd_write(part->mbd.mtd, part->blocks[i].offset, sizeof(magic),
-		       &retlen, (u_char *)&magic);
-
-	if (!rc && retlen != sizeof(magic))
-		rc = -EIO;
-
-	if (rc) {
-		printk(KERN_ERR PREFIX "'%s': unable to write RFD "
-				"header at 0x%lx\n",
-				part->mbd.mtd->name,
-				part->blocks[i].offset);
-		part->blocks[i].state = BLOCK_FAILED;
-	}
-	else
-		part->blocks[i].state = BLOCK_OK;
-
-	kfree(erase);
-}
-
 static int erase_block(struct partition *part, int block)
 {
 	struct erase_info *erase;
-	int rc = -ENOMEM;
+	int rc;
 
 	erase = kmalloc(sizeof(struct erase_info), GFP_KERNEL);
 	if (!erase)
-		goto err;
+		return -ENOMEM;
 
-	erase->mtd = part->mbd.mtd;
-	erase->callback = erase_callback;
 	erase->addr = part->blocks[block].offset;
 	erase->len = part->block_size;
-	erase->priv = (u_long)part;
 
 	part->blocks[block].state = BLOCK_ERASING;
 	part->blocks[block].free_sectors = 0;
 
 	rc = mtd_erase(part->mbd.mtd, erase);
-
 	if (rc) {
 		printk(KERN_ERR PREFIX "erase of region %llx,%llx on '%s' "
 				"failed\n", (unsigned long long)erase->addr,
 				(unsigned long long)erase->len, part->mbd.mtd->name);
-		kfree(erase);
+		part->blocks[block].state = BLOCK_FAILED;
+		part->blocks[block].free_sectors = 0;
+		part->blocks[block].used_sectors = 0;
+	} else {
+		u16 magic = cpu_to_le16(RFD_MAGIC);
+		size_t retlen;
+
+		part->blocks[block].state = BLOCK_ERASED;
+		part->blocks[block].free_sectors = part->data_sectors_per_block;
+		part->blocks[block].used_sectors = 0;
+		part->blocks[block].erases++;
+
+		rc = mtd_write(part->mbd.mtd, part->blocks[block].offset,
+			       sizeof(magic), &retlen, (u_char *)&magic);
+		if (!rc && retlen != sizeof(magic))
+			rc = -EIO;
+
+		if (rc) {
+			pr_err(PREFIX "'%s': unable to write RFD header at 0x%lx\n",
+			       part->mbd.mtd->name, part->blocks[block].offset);
+			part->blocks[block].state = BLOCK_FAILED;
+		} else {
+			part->blocks[block].state = BLOCK_OK;
+		}
 	}
 
-err:
+	kfree(erase);
+
 	return rc;
 }
 
diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index fa176f5..7963634 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -460,11 +460,8 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
 	struct mtd_info *mtd = ftl->trans->mtd;
 	struct erase_info erase;
 
-	erase.mtd = mtd;
-	erase.callback = sm_erase_callback;
 	erase.addr = sm_mkoffset(ftl, zone_num, block, 0);
 	erase.len = ftl->block_size;
-	erase.priv = (u_long)ftl;
 
 	if (ftl->unstable)
 		return -EIO;
@@ -482,15 +479,6 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
 		goto error;
 	}
 
-	if (erase.state == MTD_ERASE_PENDING)
-		wait_for_completion(&ftl->erase_completion);
-
-	if (erase.state != MTD_ERASE_DONE) {
-		sm_printk("erase of block %d in zone %d failed after wait",
-			block, zone_num);
-		goto error;
-	}
-
 	if (put_free)
 		kfifo_in(&zone->free_sectors,
 			(const unsigned char *)&block, sizeof(block));
@@ -501,12 +489,6 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
 	return -EIO;
 }
 
-static void sm_erase_callback(struct erase_info *self)
-{
-	struct sm_ftl *ftl = (struct sm_ftl *)self->priv;
-	complete(&ftl->erase_completion);
-}
-
 /* Thoroughly test that block is valid. */
 static int sm_check_block(struct sm_ftl *ftl, int zone, int block)
 {
@@ -1141,7 +1123,6 @@ static void sm_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 	mutex_init(&ftl->mutex);
 	timer_setup(&ftl->timer, sm_cache_flush_timer, 0);
 	INIT_WORK(&ftl->flush_work, sm_cache_flush_work);
-	init_completion(&ftl->erase_completion);
 
 	/* Read media information */
 	if (sm_get_media_info(ftl, mtd)) {
diff --git a/drivers/mtd/sm_ftl.h b/drivers/mtd/sm_ftl.h
index 43bb730..0a46d75 100644
--- a/drivers/mtd/sm_ftl.h
+++ b/drivers/mtd/sm_ftl.h
@@ -53,9 +53,6 @@ struct sm_ftl {
 	struct work_struct flush_work;
 	struct timer_list timer;
 
-	/* Async erase stuff */
-	struct completion erase_completion;
-
 	/* Geometry stuff */
 	int heads;
 	int sectors;
@@ -86,7 +83,6 @@ struct chs_entry {
 		printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)
 
 
-static void sm_erase_callback(struct erase_info *self);
 static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
 								int put_free);
 static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block);
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 2901c7b..3e3c0bb 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -1051,6 +1051,24 @@ static int fsl_qspi_probe(struct platform_device *pdev)
 		spi_nor_set_flash_node(nor, np);
 		nor->priv = q;
 
+		if (q->nor_num > 1 && !mtd->name) {
+			int spiflash_idx;
+
+			ret = of_property_read_u32(np, "reg", &spiflash_idx);
+			if (!ret) {
+				mtd->name = devm_kasprintf(dev, GFP_KERNEL,
+							   "%s-%d",
+							   dev_name(dev),
+							   spiflash_idx);
+				if (!mtd->name) {
+					ret = -ENOMEM;
+					goto mutex_failed;
+				}
+			} else {
+				dev_warn(dev, "reg property is missing\n");
+			}
+		}
+
 		/* fill the hooks */
 		nor->read_reg = fsl_qspi_read_reg;
 		nor->write_reg = fsl_qspi_write_reg;
@@ -1174,7 +1192,6 @@ static int fsl_qspi_resume(struct platform_device *pdev)
 static struct platform_driver fsl_qspi_driver = {
 	.driver = {
 		.name	= "fsl-quadspi",
-		.bus	= &platform_bus_type,
 		.of_match_table = fsl_qspi_dt_ids,
 	},
 	.probe          = fsl_qspi_probe,
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index d445a4d..5bfa36e 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -560,9 +560,6 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr)
 erase_err:
 	spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE);
 
-	instr->state = ret ? MTD_ERASE_FAILED : MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return ret;
 }
 
diff --git a/drivers/mtd/tests/mtd_test.c b/drivers/mtd/tests/mtd_test.c
index 3d0b8b5..c84250b 100644
--- a/drivers/mtd/tests/mtd_test.c
+++ b/drivers/mtd/tests/mtd_test.c
@@ -14,7 +14,6 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
 
 	memset(&ei, 0, sizeof(struct erase_info));
-	ei.mtd  = mtd;
 	ei.addr = addr;
 	ei.len  = mtd->erasesize;
 
@@ -24,10 +23,6 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
 		return err;
 	}
 
-	if (ei.state == MTD_ERASE_FAILED) {
-		pr_info("some erase error occurred at EB %d\n", ebnum);
-		return -EIO;
-	}
 	return 0;
 }
 
diff --git a/drivers/mtd/tests/pagetest.c b/drivers/mtd/tests/pagetest.c
index ff1e056..bc303ca 100644
--- a/drivers/mtd/tests/pagetest.c
+++ b/drivers/mtd/tests/pagetest.c
@@ -435,9 +435,13 @@ static int __init mtd_pagetest_init(void)
 	if (err)
 		goto out;
 
-	err = erasecrosstest();
-	if (err)
-		goto out;
+	if (ebcnt > 1) {
+		err = erasecrosstest();
+		if (err)
+			goto out;
+	} else {
+		pr_info("skipping erasecrosstest, 2 erase blocks needed\n");
+	}
 
 	err = erasetest();
 	if (err)
diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c
index 0b89418..20edb3b 100644
--- a/drivers/mtd/tests/speedtest.c
+++ b/drivers/mtd/tests/speedtest.c
@@ -59,7 +59,6 @@ static int multiblock_erase(int ebnum, int blocks)
 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
 
 	memset(&ei, 0, sizeof(struct erase_info));
-	ei.mtd  = mtd;
 	ei.addr = addr;
 	ei.len  = mtd->erasesize * blocks;
 
@@ -70,12 +69,6 @@ static int multiblock_erase(int ebnum, int blocks)
 		return err;
 	}
 
-	if (ei.state == MTD_ERASE_FAILED) {
-		pr_err("some erase error occurred at EB %d,"
-		       "blocks %d\n", ebnum, blocks);
-		return -EIO;
-	}
-
 	return 0;
 }
 
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 1cb287e..6b655a5 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -272,12 +272,9 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
 	if (err)
 		goto out_err;
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 	return 0;
 
 out_err:
-	instr->state = MTD_ERASE_FAILED;
 	instr->fail_addr = (long long)lnum * mtd->erasesize;
 	return err;
 }
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 8290432..0e3a76a 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -309,18 +309,6 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
 }
 
 /**
- * erase_callback - MTD erasure call-back.
- * @ei: MTD erase information object.
- *
- * Note, even though MTD erase interface is asynchronous, all the current
- * implementations are synchronous anyway.
- */
-static void erase_callback(struct erase_info *ei)
-{
-	wake_up_interruptible((wait_queue_head_t *)ei->priv);
-}
-
-/**
  * do_sync_erase - synchronously erase a physical eraseblock.
  * @ubi: UBI device description object
  * @pnum: the physical eraseblock number to erase
@@ -333,7 +321,6 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum)
 {
 	int err, retries = 0;
 	struct erase_info ei;
-	wait_queue_head_t wq;
 
 	dbg_io("erase PEB %d", pnum);
 	ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
@@ -344,14 +331,10 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum)
 	}
 
 retry:
-	init_waitqueue_head(&wq);
 	memset(&ei, 0, sizeof(struct erase_info));
 
-	ei.mtd      = ubi->mtd;
 	ei.addr     = (loff_t)pnum * ubi->peb_size;
 	ei.len      = ubi->peb_size;
-	ei.callback = erase_callback;
-	ei.priv     = (unsigned long)&wq;
 
 	err = mtd_erase(ubi->mtd, &ei);
 	if (err) {
@@ -366,25 +349,6 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum)
 		return err;
 	}
 
-	err = wait_event_interruptible(wq, ei.state == MTD_ERASE_DONE ||
-					   ei.state == MTD_ERASE_FAILED);
-	if (err) {
-		ubi_err(ubi, "interrupted PEB %d erasure", pnum);
-		return -EINTR;
-	}
-
-	if (ei.state == MTD_ERASE_FAILED) {
-		if (retries++ < UBI_IO_RETRIES) {
-			ubi_warn(ubi, "error while erasing PEB %d, retry",
-				 pnum);
-			yield();
-			goto retry;
-		}
-		ubi_err(ubi, "cannot erase PEB %d", pnum);
-		dump_stack();
-		return -EIO;
-	}
-
 	err = ubi_self_check_all_ff(ubi, pnum, 0, ubi->peb_size);
 	if (err)
 		return err;
diff --git a/drivers/net/ethernet/sfc/falcon/mtd.c b/drivers/net/ethernet/sfc/falcon/mtd.c
index cde593c..2d67e46 100644
--- a/drivers/net/ethernet/sfc/falcon/mtd.c
+++ b/drivers/net/ethernet/sfc/falcon/mtd.c
@@ -24,17 +24,8 @@
 static int ef4_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
 {
 	struct ef4_nic *efx = mtd->priv;
-	int rc;
 
-	rc = efx->type->mtd_erase(mtd, erase->addr, erase->len);
-	if (rc == 0) {
-		erase->state = MTD_ERASE_DONE;
-	} else {
-		erase->state = MTD_ERASE_FAILED;
-		erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-	}
-	mtd_erase_callback(erase);
-	return rc;
+	return efx->type->mtd_erase(mtd, erase->addr, erase->len);
 }
 
 static void ef4_mtd_sync(struct mtd_info *mtd)
diff --git a/drivers/net/ethernet/sfc/mtd.c b/drivers/net/ethernet/sfc/mtd.c
index a77a8bd..4ac30b6 100644
--- a/drivers/net/ethernet/sfc/mtd.c
+++ b/drivers/net/ethernet/sfc/mtd.c
@@ -24,17 +24,8 @@
 static int efx_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
 {
 	struct efx_nic *efx = mtd->priv;
-	int rc;
 
-	rc = efx->type->mtd_erase(mtd, erase->addr, erase->len);
-	if (rc == 0) {
-		erase->state = MTD_ERASE_DONE;
-	} else {
-		erase->state = MTD_ERASE_FAILED;
-		erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
-	}
-	mtd_erase_callback(erase);
-	return rc;
+	return efx->type->mtd_erase(mtd, erase->addr, erase->len);
 }
 
 static void efx_mtd_sync(struct mtd_info *mtd)
diff --git a/drivers/staging/goldfish/goldfish_nand.c b/drivers/staging/goldfish/goldfish_nand.c
index 52cc136..f5e002e 100644
--- a/drivers/staging/goldfish/goldfish_nand.c
+++ b/drivers/staging/goldfish/goldfish_nand.c
@@ -119,9 +119,6 @@ static int goldfish_nand_erase(struct mtd_info *mtd, struct erase_info *instr)
 		return -EIO;
 	}
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return 0;
 
 invalid_arg:
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 4a6cf28..83b8f06 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -21,14 +21,6 @@
 #include <linux/pagemap.h>
 #include "nodelist.h"
 
-struct erase_priv_struct {
-	struct jffs2_eraseblock *jeb;
-	struct jffs2_sb_info *c;
-};
-
-#ifndef __ECOS
-static void jffs2_erase_callback(struct erase_info *);
-#endif
 static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
 static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
@@ -51,7 +43,7 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
 	jffs2_dbg(1, "%s(): erase block %#08x (range %#08x-%#08x)\n",
 		  __func__,
 		  jeb->offset, jeb->offset, jeb->offset + c->sector_size);
-	instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL);
+	instr = kmalloc(sizeof(struct erase_info), GFP_KERNEL);
 	if (!instr) {
 		pr_warn("kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
 		mutex_lock(&c->erase_free_sem);
@@ -67,18 +59,15 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
 
 	memset(instr, 0, sizeof(*instr));
 
-	instr->mtd = c->mtd;
 	instr->addr = jeb->offset;
 	instr->len = c->sector_size;
-	instr->callback = jffs2_erase_callback;
-	instr->priv = (unsigned long)(&instr[1]);
-
-	((struct erase_priv_struct *)instr->priv)->jeb = jeb;
-	((struct erase_priv_struct *)instr->priv)->c = c;
 
 	ret = mtd_erase(c->mtd, instr);
-	if (!ret)
+	if (!ret) {
+		jffs2_erase_succeeded(c, jeb);
+		kfree(instr);
 		return;
+	}
 
 	bad_offset = instr->fail_addr;
 	kfree(instr);
@@ -214,22 +203,6 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock
 	wake_up(&c->erase_wait);
 }
 
-#ifndef __ECOS
-static void jffs2_erase_callback(struct erase_info *instr)
-{
-	struct erase_priv_struct *priv = (void *)instr->priv;
-
-	if(instr->state != MTD_ERASE_DONE) {
-		pr_warn("Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n",
-			(unsigned long long)instr->addr, instr->state);
-		jffs2_erase_failed(priv->c, priv->jeb, instr->fail_addr);
-	} else {
-		jffs2_erase_succeeded(priv->c, priv->jeb);
-	}
-	kfree(instr);
-}
-#endif /* !__ECOS */
-
 /* Hmmm. Maybe we should accept the extra space it takes and make
    this a standard doubly-linked list? */
 static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 205eded..a86c4fa 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -30,32 +30,19 @@
 
 #include <asm/div64.h>
 
-#define MTD_ERASE_PENDING	0x01
-#define MTD_ERASING		0x02
-#define MTD_ERASE_SUSPEND	0x04
-#define MTD_ERASE_DONE		0x08
-#define MTD_ERASE_FAILED	0x10
-
 #define MTD_FAIL_ADDR_UNKNOWN -1LL
 
+struct mtd_info;
+
 /*
  * If the erase fails, fail_addr might indicate exactly which block failed. If
  * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level
  * or was not specific to any particular block.
  */
 struct erase_info {
-	struct mtd_info *mtd;
 	uint64_t addr;
 	uint64_t len;
 	uint64_t fail_addr;
-	u_long time;
-	u_long retries;
-	unsigned dev;
-	unsigned cell;
-	void (*callback) (struct erase_info *self);
-	u_long priv;
-	u_char state;
-	struct erase_info *next;
 };
 
 struct mtd_erase_region_info {
@@ -595,8 +582,6 @@ extern void register_mtd_user (struct mtd_notifier *new);
 extern int unregister_mtd_user (struct mtd_notifier *old);
 void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size);
 
-void mtd_erase_callback(struct erase_info *instr);
-
 static inline int mtd_is_bitflip(int err) {
 	return err == -EUCLEAN;
 }
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index c4beb70..11cb0c5 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -77,6 +77,7 @@ struct mtd_part_parser {
 	struct list_head list;
 	struct module *owner;
 	const char *name;
+	const struct of_device_id *of_match_table;
 	int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
 			struct mtd_part_parser_data *);
 	void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);