Messages in this thread Patch in this message | | | From | zhong jiang <> | Subject | [PATCH] sh: mm: Use dma_zalloc_coherent instead of dma_alloc_coherent + memset | Date | Mon, 10 Sep 2018 10:55:04 +0800 |
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dma_zalloc_coherent has taken the dma_alloc_coherent() and memset() into account. Therefore, just use dma_zalloc_coherent to replace the open code.
Signed-off-by: zhong jiang <zhongjiang@huawei.com> --- arch/sh/mm/consistent.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c index 792f361..aa4e450 100644 --- a/arch/sh/mm/consistent.c +++ b/arch/sh/mm/consistent.c @@ -52,14 +52,12 @@ int __init platform_resource_setup_memory(struct platform_device *pdev, if (!memsize) return 0; - buf = dma_alloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL); + buf = dma_zalloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL); if (!buf) { pr_warning("%s: unable to allocate memory\n", name); return -ENOMEM; } - memset(buf, 0, memsize); - r->flags = IORESOURCE_MEM; r->start = dma_handle; r->end = r->start + memsize - 1; -- 1.7.12.4
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