linux-kernel - [PATCH 1/2] arm/common/dmabounce : NULL check before dma_pool

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Message-Id: <1546059926-97458-1-git-send-email-peng.hao2@zte.com.cn>
Date:   Sat, 29 Dec 2018 13:05:26 +0800
From:   Peng Hao <peng.hao2@....com.cn>
To:     linux@...linux.org.uk
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Hao <peng.hao2@....com.cn>
Subject: [PATCH 1/2]  arm/common/dmabounce : NULL check before dma_pool_destroy

NULL check before dma_pool_destroy is unnecessary because
there is a NULL check in dma_pool_destroy.

Signed-off-by: Peng Hao <peng.hao2@....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 9a92de6..dcdd80c 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -569,10 +569,8 @@ 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