linux-kernel - [tip:x86/cleanups] x86/io_delay: Break instead of fallthrough in switch statement

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Message-ID: <tip-e62a4239c3dfd182a7e676cfe9efb1f4cec5ca25@git.kernel.org>
Date:   Fri, 24 May 2019 01:04:07 -0700
From:   tip-bot for Masahiro Yamada <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, peterz@...radead.org, hpa@...or.com,
        mingo@...nel.org, bp@...en8.de, linux-kernel@...r.kernel.org,
        yamada.masahiro@...ionext.com, tglx@...utronix.de
Subject: [tip:x86/cleanups] x86/io_delay: Break instead of fallthrough in
 switch statement

Commit-ID:  e62a4239c3dfd182a7e676cfe9efb1f4cec5ca25
Gitweb:     https://git.kernel.org/tip/e62a4239c3dfd182a7e676cfe9efb1f4cec5ca25
Author:     Masahiro Yamada <yamada.masahiro@...ionext.com>
AuthorDate: Tue, 21 May 2019 16:22:10 +0900
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 24 May 2019 08:46:06 +0200

x86/io_delay: Break instead of fallthrough in switch statement

The current code is fine since 'case CONFIG_IO_DELAY_TYPE_NONE'
does nothing, but scripts/checkpatch.pl complains about this:

  warning: Possible switch case/default not preceded by break or fallthrough comment

I like break statement better than a fallthrough comment here.
It avoids the warning and clarify the code.

No behavior change is intended.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/20190521072211.21014-1-yamada.masahiro@socionext.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/io_delay.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/io_delay.c b/arch/x86/kernel/io_delay.c
index 805b7a341aca..3dc874d5d43b 100644
--- a/arch/x86/kernel/io_delay.c
+++ b/arch/x86/kernel/io_delay.c
@@ -39,6 +39,7 @@ void native_io_delay(void)
 		 * are shorter until calibrated):
 		 */
 		udelay(2);
+		break;
 	case CONFIG_IO_DELAY_TYPE_NONE:
 		break;
 	}