linux-kernel - [PATCH] powerpc/fadump: Use swap() instead of open coding it

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Message-Id: <20220129034847.76902-1-jiapeng.chong@linux.alibaba.com>
Date:   Sat, 29 Jan 2022 11:48:47 +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>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] powerpc/fadump: Use swap() instead of open coding it

Clean the following coccicheck warning:

./arch/powerpc/kernel/fadump.c:1291:34-35: WARNING opportunity for
swap().

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 arch/powerpc/kernel/fadump.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index d0ad86b67e66..de08dd078081 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -1271,7 +1271,6 @@ static void fadump_release_reserved_area(u64 start, u64 end)
 static void sort_and_merge_mem_ranges(struct fadump_mrange_info *mrange_info)
 {
 	struct fadump_memory_range *mem_ranges;
-	struct fadump_memory_range tmp_range;
 	u64 base, size;
 	int i, j, idx;
 
@@ -1286,11 +1285,8 @@ static void sort_and_merge_mem_ranges(struct fadump_mrange_info *mrange_info)
 			if (mem_ranges[idx].base > mem_ranges[j].base)
 				idx = j;
 		}
-		if (idx != i) {
-			tmp_range = mem_ranges[idx];
-			mem_ranges[idx] = mem_ranges[i];
-			mem_ranges[i] = tmp_range;
-		}
+		if (idx != i)
+			swap(mem_ranges[idx], mem_ranges[i]);
 	}
 
 	/* Merge adjacent reserved ranges */
-- 
2.20.1.7.g153144c