linux-kernel - [tip:timers/core] timers: Mark expected switch fall-throughs

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Date:   Tue, 29 Jan 2019 11:13:34 -0800
From:   "tip-bot for Gustavo A. R. Silva" <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     gustavo@...eddedor.com, sboyd@...nel.org, hpa@...or.com,
        linux-kernel@...r.kernel.org, fweisbec@...il.com,
        tglx@...utronix.de, john.stultz@...aro.org, mingo@...nel.org
Subject: [tip:timers/core] timers: Mark expected switch fall-throughs

Commit-ID:  75b710af7139768fd4ba2d4e05335d2344796279
Gitweb:     https://git.kernel.org/tip/75b710af7139768fd4ba2d4e05335d2344796279
Author:     Gustavo A. R. Silva <gustavo@...eddedor.com>
AuthorDate: Wed, 23 Jan 2019 02:14:13 -0600
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 29 Jan 2019 20:08:42 +0100

timers: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where fall through is indeed expected.

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Stephen Boyd <sboyd@...nel.org>
Link: https://lkml.kernel.org/r/20190123081413.GA3949@embeddedor

---
 kernel/time/hrtimer.c        | 2 +-
 kernel/time/tick-broadcast.c | 1 +
 kernel/time/timer.c          | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index f5cfa1b73d6f..6418e1bdc549 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -364,7 +364,7 @@ static bool hrtimer_fixup_activate(void *addr, enum debug_obj_state state)
 	switch (state) {
 	case ODEBUG_STATE_ACTIVE:
 		WARN_ON(1);
-
+		/* fall through */
 	default:
 		return false;
 	}
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 803fa67aace9..ee834d4fb814 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -375,6 +375,7 @@ void tick_broadcast_control(enum tick_broadcast_mode mode)
 	switch (mode) {
 	case TICK_BROADCAST_FORCE:
 		tick_broadcast_forced = 1;
+		/* fall through */
 	case TICK_BROADCAST_ON:
 		cpumask_set_cpu(cpu, tick_broadcast_on);
 		if (!cpumask_test_and_set_cpu(cpu, tick_broadcast_mask)) {
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 444156debfa0..167e71f9ed3c 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -647,7 +647,7 @@ static bool timer_fixup_activate(void *addr, enum debug_obj_state state)
 
 	case ODEBUG_STATE_ACTIVE:
 		WARN_ON(1);
-
+		/* fall through */
 	default:
 		return false;
 	}