linux-kernel - [tip:irq/core] genirq: Correctly annotate implicit fall through

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Date:   Tue, 15 Jan 2019 01:46:30 -0800
From:   tip-bot for Mathieu Malaterre <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, linux-kernel@...r.kernel.org, malat@...ian.org,
        mingo@...nel.org, tglx@...utronix.de
Subject: [tip:irq/core] genirq: Correctly annotate implicit fall through

Commit-ID:  01cdfa912f1004c463586f52f1dfcbec1274b1f2
Gitweb:     https://git.kernel.org/tip/01cdfa912f1004c463586f52f1dfcbec1274b1f2
Author:     Mathieu Malaterre <malat@...ian.org>
AuthorDate: Mon, 14 Jan 2019 21:36:33 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 15 Jan 2019 10:40:53 +0100

genirq: Correctly annotate implicit fall through

There is a plan to build the kernel with -Wimplicit-fallthrough. The
fallthrough in __handle_irq_event_percpu() has a fallthrough annotation
which is followed by an additional comment and is not recognized by GCC.

Separate the 'fall through' and the rest of the comment with a dash so the
regular expression used by GCC matches.

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lkml.kernel.org/r/20190114203633.18557-1-malat@debian.org
---
 kernel/irq/handle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 38554bc35375..6df5ddfdb0f8 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -166,7 +166,7 @@ irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags
 
 			__irq_wake_thread(desc, action);
 
-			/* Fall through to add to randomness */
+			/* Fall through - to add to randomness */
 		case IRQ_HANDLED:
 			*flags |= action->flags;
 			break;