Commit 43764557 authored Apr 29, 2016 by Julia Lawall Committed by Vinod Koul May 03, 2016

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>

parent 305697fa

drivers/dma/fsldma.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -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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