linux-kernel - [PATCH 1/3] clocksource: Skip to check the override clocksource if override name is empty

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Date:   Wed, 17 Jan 2018 14:01:28 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     john.stultz@...aro.org, tglx@...utronix.de, sboyd@...eaurora.org
Cc:     broonie@...nel.org, arnd@...db.de, baolin.wang@...aro.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] clocksource: Skip to check the override clocksource if override name is empty

Some platforms will not set the override clocksource name to select, so we
can skip to check the override clocksource when selecting one clocksource.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
---
 kernel/time/clocksource.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 65f9e3f..c5fdcb1 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -594,6 +594,9 @@ static void __clocksource_select(bool skipcur)
 	if (!best)
 		return;
 
+	if (!strlen(override_name))
+		goto found;
+
 	/* Check for the override clocksource. */
 	list_for_each_entry(cs, &clocksource_list, list) {
 		if (skipcur && cs == curr_clocksource)
@@ -625,6 +628,7 @@ static void __clocksource_select(bool skipcur)
 		break;
 	}
 
+found:
 	if (curr_clocksource != best && !timekeeping_notify(best)) {
 		pr_info("Switched to clocksource %s\n", best->name);
 		curr_clocksource = best;
-- 
1.7.9.5