linux-kernel - [PATCH] arm: create_mapping function to remove unused return values

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Message-Id: <20220607033122.256388-1-kunyu@nfschina.com>
Date:   Tue,  7 Jun 2022 11:31:22 +0800
From:   Li kunyu <kunyu@...china.com>
To:     ryabinin.a.a@...il.com, glider@...gle.com, andreyknvl@...il.com,
        dvyukov@...gle.com, vincenzo.frascino@....com
Cc:     linux@...linux.org.uk, kasan-dev@...glegroups.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Li kunyu <kunyu@...china.com>
Subject: [PATCH] arm: create_mapping function to remove unused return values

Change the return value to void to reduce eax register execution.

Signed-off-by: Li kunyu <kunyu@...china.com>
---
 arch/arm/mm/kasan_init.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c
index 5ad0d6c56d56..db2068329985 100644
--- a/arch/arm/mm/kasan_init.c
+++ b/arch/arm/mm/kasan_init.c
@@ -187,7 +187,7 @@ static void __init clear_pgds(unsigned long start,
 		pmd_clear(pmd_off_k(start));
 }
 
-static int __init create_mapping(void *start, void *end)
+static void __init create_mapping(void *start, void *end)
 {
 	void *shadow_start, *shadow_end;
 
@@ -199,7 +199,6 @@ static int __init create_mapping(void *start, void *end)
 
 	kasan_pgd_populate((unsigned long)shadow_start & PAGE_MASK,
 			   PAGE_ALIGN((unsigned long)shadow_end), false);
-	return 0;
 }
 
 void __init kasan_init(void)
-- 
2.18.2