dmaengine: vdma: Use dma_pool_zalloc

Dma_pool_zalloc combines dma_pool_alloc and memset 0.  The semantic patch
that makes this transformation is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression d,e;
statement S;
@@

        d =
-            dma_pool_alloc
+            dma_pool_zalloc
             (...);
        if (!d) S
-       memset(d, 0, sizeof(*d));
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/dma/xilinx/xilinx_vdma.c b/drivers/dma/xilinx/xilinx_vdma.c
index 3c5ce373b99d..781ab4dbb2b8 100644
--- a/drivers/dma/xilinx/xilinx_vdma.c
+++ b/drivers/dma/xilinx/xilinx_vdma.c
@@ -343,11 +343,10 @@ xilinx_vdma_alloc_tx_segment(struct xilinx_vdma_chan *chan)
         struct xilinx_vdma_tx_segment *segment;
         dma_addr_t phys;
 
-        segment = dma_pool_alloc(chan->desc_pool, GFP_ATOMIC, &phys);
+        segment = dma_pool_zalloc(chan->desc_pool, GFP_ATOMIC, &phys);
         if (!segment)
                 return NULL;
 
-        memset(segment, 0, sizeof(*segment));
         segment->phys = phys;
 
         return segment;