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Subject[PATCH linux-next] powerpc/cell/axon msi: Use dma zalloc coherent()
From: ye xingchen <ye.xingchen@zte.com.cn>

Instead of using dma_alloc_coherent() and memset() directly use
dma_zalloc_coherent().

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
---
arch/powerpc/platforms/cell/axon_msi.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index 0c11aad896c7..8a4c522c8e67 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -358,8 +358,8 @@ static int axon_msi_probe(struct platform_device *device)
goto out_free_msic;
}

- msic->fifo_virt = dma_alloc_coherent(&device->dev, MSIC_FIFO_SIZE_BYTES,
- &msic->fifo_phys, GFP_KERNEL);
+ msic->fifo_virt = dma_zalloc_coherent(&device->dev, MSIC_FIFO_SIZE_BYTES,
+ &msic->fifo_phys, GFP_KERNEL);
if (!msic->fifo_virt) {
printk(KERN_ERR "axon_msi: couldn't allocate fifo for %pOF\n",
dn);
@@ -372,7 +372,6 @@ static int axon_msi_probe(struct platform_device *device)
dn);
goto out_free_fifo;
}
- memset(msic->fifo_virt, 0xff, MSIC_FIFO_SIZE_BYTES);

/* We rely on being able to stash a virq in a u16, so limit irqs to < 65536 */
msic->irq_domain = irq_domain_add_nomap(dn, 65536, &msic_host_ops, msic);
--
2.25.1
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