linux-kernel - [PATCH] irq: annotate implicit fall through

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Message-Id: <20190114203633.18557-1-malat@debian.org>
Date:   Mon, 14 Jan 2019 21:36:33 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Mathieu Malaterre <malat@...ian.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] irq: annotate implicit fall through

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warning (W=1).

In this particular case add a ‘-’ so as to match the regular expression
expected by GCC.

This commit remove the following warning:

  kernel/irq/handle.c:167:4: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <malat@...ian.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;
-- 
2.19.2