linux-kernel - [PATCH -next 09/26] mmc: Use dma_zalloc

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Date:	Sun, 15 Jun 2014 13:37:38 -0700
From:	Joe Perches <joe@...ches.com>
To:	linux-kernel@...r.kernel.org
Cc:	David Brown <davidb@...eaurora.org>,
	Daniel Walker <dwalker@...o99.com>,
	Bryan Huntsman <bryanh@...eaurora.org>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-arm-msm@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: [PATCH -next 09/26] mmc: Use dma_zalloc_coherent

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

Signed-off-by: Joe Perches <joe@...ches.com>
---
 drivers/mmc/host/msm_sdcc.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 9405ecd..3035d84 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1146,15 +1146,13 @@ msmsdcc_init_dma(struct msmsdcc_host *host)
 	if (!host->dmares)
 		return -ENODEV;
 
-	host->dma.nc = dma_alloc_coherent(NULL,
-					  sizeof(struct msmsdcc_nc_dmadata),
-					  &host->dma.nc_busaddr,
-					  GFP_KERNEL);
+	host->dma.nc = dma_zalloc_coherent(NULL,
+					   sizeof(struct msmsdcc_nc_dmadata),
+					   &host->dma.nc_busaddr, GFP_KERNEL);
 	if (host->dma.nc == NULL) {
 		pr_err("Unable to allocate DMA buffer\n");
 		return -ENOMEM;
 	}
-	memset(host->dma.nc, 0x00, sizeof(struct msmsdcc_nc_dmadata));
 	host->dma.cmd_busaddr = host->dma.nc_busaddr;
 	host->dma.cmdptr_busaddr = host->dma.nc_busaddr +
 				offsetof(struct msmsdcc_nc_dmadata, cmdptr);
-- 
1.8.1.2.459.gbcd45b4.dirty

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