linux-kernel - [PATCH] clocksource/drivers/tango-xtal: Fix boot hang due to incorrect test

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Message-Id: <1461310162-14701-1-git-send-email-daniel.lezcano@linaro.org>
Date:	Fri, 22 Apr 2016 09:29:22 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	tglx@...utronix.de
Cc:	mingo@...nel.org, Marc Gonzalez <marc_gonzalez@...madesigns.com>,
	linux-kernel@...r.kernel.org (open list:CLOCKSOURCE, CLOC...)
Subject: [PATCH] clocksource/drivers/tango-xtal: Fix boot hang due to incorrect test

Commit 0881841f7e78 introduced a regression by inverting a test check
after calling clocksource_mmio_init(). That results on the system to
hang at boot time.

Fix it by inverting the test again.

Fixes: 0881841f7e78 ("Replace code by clocksource_mmio_init")
Reported-by: Marc Gonzalez <marc_gonzalez@...madesigns.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/clocksource/tango_xtal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/tango_xtal.c b/drivers/clocksource/tango_xtal.c
index 2bcecaf..c407c47 100644
--- a/drivers/clocksource/tango_xtal.c
+++ b/drivers/clocksource/tango_xtal.c
@@ -42,7 +42,7 @@ static void __init tango_clocksource_init(struct device_node *np)
 
 	ret = clocksource_mmio_init(xtal_in_cnt, "tango-xtal", xtal_freq, 350,
 				    32, clocksource_mmio_readl_up);
-	if (!ret) {
+	if (ret) {
 		pr_err("%s: registration failed\n", np->full_name);
 		return;
 	}
-- 
1.9.1