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powerpc/pasemi: Use dma_zalloc_coherent()

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Replace dma_alloc_coherent() + memset() with dma_zalloc_coherent().

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Sabyasachi Gupta 2018-11-05 08:58:23 +05:30 committed by Michael Ellerman
parent af8511cf32
commit c3d6a64bd1
1 changed files with 1 additions and 3 deletions
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4
arch/powerpc/platforms/pasemi/dma_lib.c
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@ -255,15 +255,13 @@ int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size)
chan->ring_size = ring_size; chan->ring_size = ring_size;
chan->ring_virt = dma_alloc_coherent(&dma_pdev->dev, chan->ring_virt = dma_zalloc_coherent(&dma_pdev->dev,
ring_size * sizeof(u64), ring_size * sizeof(u64),
&chan->ring_dma, GFP_KERNEL); &chan->ring_dma, GFP_KERNEL);
if (!chan->ring_virt) if (!chan->ring_virt)
return -ENOMEM; return -ENOMEM;
memset(chan->ring_virt, 0, ring_size * sizeof(u64));
return 0; return 0;
} }
EXPORT_SYMBOL(pasemi_dma_alloc_ring); EXPORT_SYMBOL(pasemi_dma_alloc_ring);