* [PATCH] ARM: dmabounce: NULL check before some freeing functions is
@ 2019-02-27 2:26 WangBo
0 siblings, 0 replies; only message in thread
From: WangBo @ 2019-02-27 2:26 UTC (permalink / raw)
To: linux-kernel; +Cc: rmk+kernel, linux-arm-kernel, wang.bo116
The function dma_pool_destroy(NULL) is safe, so removes NULL check before
freeing the mem. This patch also fix the ifnullfree.cocci warnings.
Signed-off-by: WangBo <wang.bo116@zte.com.cn>
---
arch/arm/common/dmabounce.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 5ba4622..dd520a3 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -563,10 +563,8 @@ void dmabounce_unregister_dev(struct device *dev)
BUG();
}
- if (device_info->small.pool)
- dma_pool_destroy(device_info->small.pool);
- if (device_info->large.pool)
- dma_pool_destroy(device_info->large.pool);
+ dma_pool_destroy(device_info->small.pool);
+ dma_pool_destroy(device_info->large.pool);
#ifdef STATS
if (device_info->attr_res == 0)
--
2.7.4
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