Merge branch 'topic/hsu' into for-linus
diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c
index eef145e..59d1e7c 100644
--- a/drivers/dma/hsu/hsu.c
+++ b/drivers/dma/hsu/hsu.c
@@ -77,8 +77,8 @@
hsu_chan_writel(hsuc, HSU_CH_MTSR, mtsr);
/* Set descriptors */
- count = (desc->nents - desc->active) % HSU_DMA_CHAN_NR_DESC;
- for (i = 0; i < count; i++) {
+ count = desc->nents - desc->active;
+ for (i = 0; i < count && i < HSU_DMA_CHAN_NR_DESC; i++) {
hsu_chan_writel(hsuc, HSU_CH_DxSAR(i), desc->sg[i].addr);
hsu_chan_writel(hsuc, HSU_CH_DxTSR(i), desc->sg[i].len);
@@ -160,7 +160,7 @@
return IRQ_NONE;
/* Timeout IRQ, need wait some time, see Errata 2 */
- if (hsuc->direction == DMA_DEV_TO_MEM && (sr & HSU_CH_SR_DESCTO_ANY))
+ if (sr & HSU_CH_SR_DESCTO_ANY)
udelay(2);
sr &= ~HSU_CH_SR_DESCTO_ANY;
@@ -417,6 +417,8 @@
hsu->dma.dev = chip->dev;
+ dma_set_max_seg_size(hsu->dma.dev, HSU_CH_DxTSR_MASK);
+
ret = dma_async_device_register(&hsu->dma);
if (ret)
return ret;
diff --git a/drivers/dma/hsu/hsu.h b/drivers/dma/hsu/hsu.h
index 578a8ee..50a9d1b 100644
--- a/drivers/dma/hsu/hsu.h
+++ b/drivers/dma/hsu/hsu.h
@@ -55,6 +55,10 @@
#define HSU_CH_DCR_CHEI BIT(23)
#define HSU_CH_DCR_CHTOI(x) BIT(24 + (x))
+/* Bits in HSU_CH_DxTSR */
+#define HSU_CH_DxTSR_MASK GENMASK(15, 0)
+#define HSU_CH_DxTSR_TSR(x) ((x) & HSU_CH_DxTSR_MASK)
+
struct hsu_dma_sg {
dma_addr_t addr;
unsigned int len;