[PATCH -next 06/26] dma: Use dma_zalloc_coherent

[Joe Perches]

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

Signed-off-by: Joe Perches <j...@perches.com>
---
 drivers/dma/imx-sdma.c | 5 ++---
 drivers/dma/mxs-dma.c  | 8 +++-----
 2 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1287146..4758725 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -904,14 +904,13 @@ static int sdma_request_channel(struct sdma_channel 
*sdmac)
        int channel = sdmac->channel;
        int ret = -EBUSY;
 
-       sdmac->bd = dma_alloc_coherent(NULL, PAGE_SIZE, &sdmac->bd_phys, 
GFP_KERNEL);
+       sdmac->bd = dma_zalloc_coherent(NULL, PAGE_SIZE, &sdmac->bd_phys,
+                                       GFP_KERNEL);
        if (!sdmac->bd) {
                ret = -ENOMEM;
                goto out;
        }
 
-       memset(sdmac->bd, 0, PAGE_SIZE);
-
        sdma->channel_control[channel].base_bd_ptr = sdmac->bd_phys;
        sdma->channel_control[channel].current_bd_ptr = sdmac->bd_phys;
 
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index ead4913..dc1dba7 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -413,16 +413,14 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan 
*chan)
        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
        int ret;
 
-       mxs_chan->ccw = dma_alloc_coherent(mxs_dma->dma_device.dev,
-                               CCW_BLOCK_SIZE, &mxs_chan->ccw_phys,
-                               GFP_KERNEL);
+       mxs_chan->ccw = dma_zalloc_coherent(mxs_dma->dma_device.dev,
+                                           CCW_BLOCK_SIZE,
+                                           &mxs_chan->ccw_phys, GFP_KERNEL);
        if (!mxs_chan->ccw) {
                ret = -ENOMEM;
                goto err_alloc;
        }
 
-       memset(mxs_chan->ccw, 0, CCW_BLOCK_SIZE);
-
        if (mxs_chan->chan_irq != NO_IRQ) {
                ret = request_irq(mxs_chan->chan_irq, mxs_dma_int_handler,
                                        0, "mxs-dma", mxs_dma);
-- 
1.8.1.2.459.gbcd45b4.dirty

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