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Commit 43764557 authored by Julia Lawall's avatar Julia Lawall Committed by Vinod Koul
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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: default avatarJulia Lawall <Julia.Lawall@lip6.fr>
Acked-by: default avatarLi Yang <leoyang.li@nxp.com>
Signed-off-by: default avatarVinod 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;