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authorJulia Lawall <Julia.Lawall@lip6.fr>2016-04-29 22:09:10 +0200
committerVinod Koul <vinod.koul@intel.com>2016-05-03 12:23:12 +0530
commit305697facd1b6d1ce41eaffb1fbe2bf5950334eb (patch)
tree873b85d2d5fdba6a5ea0e763ec2f31827cc4ab08 /drivers/dma
parent1c85a8440f0cd19e7c1235c8abfc3e07b2226691 (diff)
downloadlinux-305697facd1b6d1ce41eaffb1fbe2bf5950334eb.tar.bz2
dmaengine: ioatdma: 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> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioat/init.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index efdee1a69fc4..d4c63d48b970 100644
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -690,12 +690,11 @@ static int ioat_alloc_chan_resources(struct dma_chan *c)
/* allocate a completion writeback area */
/* doing 2 32bit writes to mmio since 1 64b write doesn't work */
ioat_chan->completion =
- dma_pool_alloc(ioat_chan->ioat_dma->completion_pool,
- GFP_KERNEL, &ioat_chan->completion_dma);
+ dma_pool_zalloc(ioat_chan->ioat_dma->completion_pool,
+ GFP_KERNEL, &ioat_chan->completion_dma);
if (!ioat_chan->completion)
return -ENOMEM;
- memset(ioat_chan->completion, 0, sizeof(*ioat_chan->completion));
writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,
ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);
writel(((u64)ioat_chan->completion_dma) >> 32,