From: Joe Perches <joe@perches.com>
Date: Sun, 15 Jun 2014 20:37:32 +0000 (-0700)
Subject: ata: Use dma_zalloc_coherent
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d0a2dbab95ce56761f42da333cdb6db8ee561a69;p=karo-tx-linux.git

ata: Use dma_zalloc_coherent

Use the zeroing function instead of dma_alloc_coherent & memset(,0,)

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
(cherry picked from commit 94463a9cadc7f72a70ec6ee801109c2f1e44a123)
---

diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index db3c29d6a105..65071591b143 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -734,13 +734,12 @@ static int sata_fsl_port_start(struct ata_port *ap)
 	if (!pp)
 		return -ENOMEM;
 
-	mem = dma_alloc_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, &mem_dma,
-				 GFP_KERNEL);
+	mem = dma_zalloc_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, &mem_dma,
+				  GFP_KERNEL);
 	if (!mem) {
 		kfree(pp);
 		return -ENOMEM;
 	}
-	memset(mem, 0, SATA_FSL_PORT_PRIV_DMA_SZ);
 
 	pp->cmdslot = mem;
 	pp->cmdslot_paddr = mem_dma;