linux-kernel - [PATCH] ARM: dma-mapping: remove redundant NULL check

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Date:   Wed, 27 Jan 2021 17:26:06 +0800
From:   Abaci Team <abaci-bugfix@...ux.alibaba.com>
To:     linux@...linux.org.uk
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Abaci Team <abaci-bugfix@...ux.alibaba.com>
Subject: [PATCH] ARM: dma-mapping: remove redundant NULL check

Fix below warnings reported by coccicheck:
./arch/arm/common/dmabounce.c:565:2-18: WARNING: NULL check before some
freeing functions is not needed.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Suggested-by: Yang Li <oswb@...ux.alibaba.com>
Signed-off-by: Abaci Team <abaci-bugfix@...ux.alibaba.com>
---
 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 7996c04..bf1218a 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -561,10 +561,8 @@ 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)
-- 
1.8.3.1