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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>
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@ -690,12 +690,11 @@ static int ioat_alloc_chan_resources(struct dma_chan *c)
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/* allocate a completion writeback area */
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/* allocate a completion writeback area */
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/* doing 2 32bit writes to mmio since 1 64b write doesn't work */
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/* doing 2 32bit writes to mmio since 1 64b write doesn't work */
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ioat_chan->completion =
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ioat_chan->completion =
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dma_pool_alloc(ioat_chan->ioat_dma->completion_pool,
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dma_pool_zalloc(ioat_chan->ioat_dma->completion_pool,
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GFP_KERNEL, &ioat_chan->completion_dma);
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GFP_KERNEL, &ioat_chan->completion_dma);
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if (!ioat_chan->completion)
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if (!ioat_chan->completion)
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return -ENOMEM;
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return -ENOMEM;
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memset(ioat_chan->completion, 0, sizeof(*ioat_chan->completion));
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writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,
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writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,
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ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);
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ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);
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writel(((u64)ioat_chan->completion_dma) >> 32,
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writel(((u64)ioat_chan->completion_dma) >> 32,
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