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authorJulia Lawall <Julia.Lawall@lip6.fr>2016-04-29 22:09:12 +0200
committerVinod Koul <vinod.koul@intel.com>2016-05-03 12:23:25 +0530
commit4376455727dcf627f12c3d209410ac576c0e8f0e (patch)
tree966cbcdf1b05f0d22ccec424182d4e7d8e922ae7
parent305697facd1b6d1ce41eaffb1fbe2bf5950334eb (diff)
downloadop-kernel-dev-4376455727dcf627f12c3d209410ac576c0e8f0e.zip
op-kernel-dev-4376455727dcf627f12c3d209410ac576c0e8f0e.tar.gz
dmaengine: fsldma: 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: Li Yang <leoyang.li@nxp.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
-rw-r--r--drivers/dma/fsldma.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index aac85c3..a8828ed 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -462,13 +462,12 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor(struct fsldma_chan *chan)
struct fsl_desc_sw *desc;
dma_addr_t pdesc;
- desc = dma_pool_alloc(chan->desc_pool, GFP_ATOMIC, &pdesc);
+ desc = dma_pool_zalloc(chan->desc_pool, GFP_ATOMIC, &pdesc);
if (!desc) {
chan_dbg(chan, "out of memory for link descriptor\n");
return NULL;
}
- memset(desc, 0, sizeof(*desc));
INIT_LIST_HEAD(&desc->tx_list);
dma_async_tx_descriptor_init(&desc->async_tx, &chan->common);
desc->async_tx.tx_submit = fsl_dma_tx_submit;
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