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MIPS: lantiq: Use dma_zalloc_coherent() in dma code

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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
This commit is contained in:
Hauke Mehrtens 2018-07-22 01:30:57 +02:00 committed by Paul Burton
parent a307188689
commit 2b5c49131f
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GPG key ID: 3EA79FACB57500DD
1 changed files with 1 additions and 2 deletions
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3
arch/mips/lantiq/xway/dma.c
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@ -130,10 +130,9 @@ ltq_dma_alloc(struct ltq_dma_channel *ch)
unsigned long flags;
ch->desc = 0;
ch->desc_base = dma_alloc_coherent(NULL,
ch->desc_base = dma_zalloc_coherent(NULL,
LTQ_DESC_NUM * LTQ_DESC_SIZE,
&ch->phys, GFP_ATOMIC);
memset(ch->desc_base, 0, LTQ_DESC_NUM * LTQ_DESC_SIZE);
spin_lock_irqsave(&ltq_dma_lock, flags);
ltq_dma_w32(ch->nr, LTQ_DMA_CS);