[libata] ATAPI pad allocation fixes/cleanup
Use ata_pad_{alloc,free} in two drivers, to factor out common code.
Add ata_pad_{alloc,free} to two other drivers, which needed the padding
but had not been updated.
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 64af334..0f469e3 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -670,6 +670,11 @@
ata_host_stop(host_set);
}
+static inline void mv_priv_free(struct mv_port_priv *pp, struct device *dev)
+{
+ dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
+}
+
/**
* mv_port_start - Port specific init/start routine.
* @ap: ATA channel to manipulate
@@ -687,21 +692,23 @@
void __iomem *port_mmio = mv_ap_base(ap);
void *mem;
dma_addr_t mem_dma;
+ int rc = -ENOMEM;
pp = kmalloc(sizeof(*pp), GFP_KERNEL);
- if (!pp) {
- return -ENOMEM;
- }
+ if (!pp)
+ goto err_out;
memset(pp, 0, sizeof(*pp));
mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
GFP_KERNEL);
- if (!mem) {
- kfree(pp);
- return -ENOMEM;
- }
+ if (!mem)
+ goto err_out_pp;
memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
+ rc = ata_pad_alloc(ap, dev);
+ if (rc)
+ goto err_out_priv;
+
/* First item in chunk of DMA memory:
* 32-slot command request table (CRQB), 32 bytes each in size
*/
@@ -746,6 +753,13 @@
*/
ap->private_data = pp;
return 0;
+
+err_out_priv:
+ mv_priv_free(pp, dev);
+err_out_pp:
+ kfree(pp);
+err_out:
+ return rc;
}
/**
@@ -768,7 +782,8 @@
spin_unlock_irqrestore(&ap->host_set->lock, flags);
ap->private_data = NULL;
- dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
+ ata_pad_free(ap, dev);
+ mv_priv_free(pp, dev);
kfree(pp);
}