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dmaengine: fsldma: Use dma_pool_zalloc

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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>
This commit is contained in:
Julia Lawall 2016-04-29 22:09:12 +02:00 committed by Vinod Koul
parent 305697facd
commit 4376455727
1 changed files with 1 additions and 2 deletions
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3
drivers/dma/fsldma.c
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@ -462,13 +462,12 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor(struct fsldma_chan *chan)
struct fsl_desc_sw *desc; struct fsl_desc_sw *desc;
dma_addr_t pdesc; 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) { if (!desc) {
chan_dbg(chan, "out of memory for link descriptor\n"); chan_dbg(chan, "out of memory for link descriptor\n");
return NULL; return NULL;
} }
memset(desc, 0, sizeof(*desc));
INIT_LIST_HEAD(&desc->tx_list); INIT_LIST_HEAD(&desc->tx_list);
dma_async_tx_descriptor_init(&desc->async_tx, &chan->common); dma_async_tx_descriptor_init(&desc->async_tx, &chan->common);
desc->async_tx.tx_submit = fsl_dma_tx_submit; desc->async_tx.tx_submit = fsl_dma_tx_submit;