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Message-Id: <20210712061048.132835607@linuxfoundation.org>
Date: Mon, 12 Jul 2021 08:12:42 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
Guo Ren <guoren@...nel.org>, linux-csky@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 679/700] csky: fix syscache.c fallthrough warning
From: Randy Dunlap <rdunlap@...radead.org>
[ Upstream commit 0679d29d3e2351a1c3049c26a63ce1959cad5447 ]
This case of the switch statement falls through to the following case.
This appears to be on purpose, so declare it as OK.
../arch/csky/mm/syscache.c: In function '__do_sys_cacheflush':
../arch/csky/mm/syscache.c:17:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
17 | flush_icache_mm_range(current->mm,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
18 | (unsigned long)addr,
| ~~~~~~~~~~~~~~~~~~~~
19 | (unsigned long)addr + bytes);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/csky/mm/syscache.c:20:2: note: here
20 | case DCACHE:
| ^~~~
Fixes: 997153b9a75c ("csky: Add flush_icache_mm to defer flush icache all")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Guo Ren <guoren@...nel.org>
Cc: linux-csky@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
arch/csky/mm/syscache.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/csky/mm/syscache.c b/arch/csky/mm/syscache.c
index ffade2f9a4c8..4e51d63850c4 100644
--- a/arch/csky/mm/syscache.c
+++ b/arch/csky/mm/syscache.c
@@ -17,6 +17,7 @@ SYSCALL_DEFINE3(cacheflush,
flush_icache_mm_range(current->mm,
(unsigned long)addr,
(unsigned long)addr + bytes);
+ fallthrough;
case DCACHE:
dcache_wb_range((unsigned long)addr,
(unsigned long)addr + bytes);
--
2.30.2
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