linux-kernel - [PATCH] powerpc/iommu/debug: Remove redundant NULL check

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Message-Id: <1616406217-94635-1-git-send-email-jiapeng.chong@linux.alibaba.com>
Date:   Mon, 22 Mar 2021 17:43:37 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     mpe@...erman.id.au
Cc:     benh@...nel.crashing.org, paulus@...ba.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH] powerpc/iommu/debug: Remove redundant NULL check

Fix the following coccicheck warnings:

./fs/io_uring.c:5989:4-9: WARNING: NULL check before some freeing
functions is not needed.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 arch/powerpc/kernel/iommu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index c00214a..2168714 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -72,8 +72,7 @@ static void iommu_debugfs_del(struct iommu_table *tbl)
 
 	sprintf(name, "%08lx", tbl->it_index);
 	liobn_entry = debugfs_lookup(name, iommu_debugfs_dir);
-	if (liobn_entry)
-		debugfs_remove(liobn_entry);
+	debugfs_remove(liobn_entry);
 }
 #else
 static void iommu_debugfs_add(struct iommu_table *tbl){}
-- 
1.8.3.1