From: WangBo <wdjjwb@163.com>
To: linux-kernel@vger.kernel.org
Cc: rmk+kernel@armlinux.org.uk, linux-arm-kernel@lists.infradead.org,
wang.bo116@zte.com.cn
Subject: [PATCH] ARM: dmabounce: NULL check before some freeing functions is
Date: Wed, 27 Feb 2019 10:26:15 +0800 [thread overview]
Message-ID: <1551234375-6223-1-git-send-email-wdjjwb@163.com> (raw)
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
reply other threads:[~2019-02-27 2:26 UTC|newest]
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