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MIPS: lantiq: Use dma_zalloc_coherent() in dma code
Instead of using dma_alloc_coherent() and memset() directly use dma_zalloc_coherent(). Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/19962/ Cc: ralf@linux-mips.org Cc: jhogan@kernel.org Cc: john@phrozen.org Cc: linux-mips@linux-mips.org Cc: dev@kresin.me
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@ -130,10 +130,9 @@ ltq_dma_alloc(struct ltq_dma_channel *ch)
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unsigned long flags;
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ch->desc = 0;
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ch->desc_base = dma_alloc_coherent(NULL,
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ch->desc_base = dma_zalloc_coherent(NULL,
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LTQ_DESC_NUM * LTQ_DESC_SIZE,
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&ch->phys, GFP_ATOMIC);
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memset(ch->desc_base, 0, LTQ_DESC_NUM * LTQ_DESC_SIZE);
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spin_lock_irqsave(<q_dma_lock, flags);
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ltq_dma_w32(ch->nr, LTQ_DMA_CS);
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