* [PATCH next] sh: remove call to memset after dma_alloc_coherent
@ 2020-01-02 1:54 ` Chen Zhou
0 siblings, 0 replies; 2+ messages in thread
From: Chen Zhou @ 2020-01-02 1:54 UTC (permalink / raw)
To: ysato, dalias; +Cc: linux-sh, linux-kernel, chenzhou10
Function dma_alloc_coherent use in buf already zeroes out memory,
so memset is not needed.
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
---
arch/sh/mm/consistent.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 3169a34..0de206c 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -57,8 +57,6 @@ int __init platform_resource_setup_memory(struct platform_device *pdev,
return -ENOMEM;
}
- memset(buf, 0, memsize);
-
r->flags = IORESOURCE_MEM;
r->start = dma_handle;
r->end = r->start + memsize - 1;
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH next] sh: remove call to memset after dma_alloc_coherent
@ 2020-01-02 1:54 ` Chen Zhou
0 siblings, 0 replies; 2+ messages in thread
From: Chen Zhou @ 2020-01-02 1:54 UTC (permalink / raw)
To: ysato, dalias; +Cc: linux-sh, linux-kernel, chenzhou10
Function dma_alloc_coherent use in buf already zeroes out memory,
so memset is not needed.
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
---
arch/sh/mm/consistent.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 3169a34..0de206c 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -57,8 +57,6 @@ int __init platform_resource_setup_memory(struct platform_device *pdev,
return -ENOMEM;
}
- memset(buf, 0, memsize);
-
r->flags = IORESOURCE_MEM;
r->start = dma_handle;
r->end = r->start + memsize - 1;
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2020-01-02 1:54 [PATCH next] sh: remove call to memset after dma_alloc_coherent Chen Zhou
2020-01-02 1:54 ` Chen Zhou
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