From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Date: Wed, 18 Mar 2015 13:09:53 +0000 (+0100)
Subject: ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout
X-Git-Tag: firefly_0821_release~176^2~1557^2~4^2~8
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9f294c178e03d824a89a85284b04c0770425de76;p=firefly-linux-kernel-4.4.55.git

ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout

exynos_boot_secondary() can erroneously return 0 or -ENOSYS even
when waiting on pen_release being set to -1 timeouts.  Fix it by
adjusting ret variable value to -ETIMEDOUT when necessary.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
---

diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index a825bca2a2b6..48f950d0b70e 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -337,6 +337,9 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
 		udelay(10);
 	}
 
+	if (pen_release != -1)
+		ret = -ETIMEDOUT;
+
 	/*
 	 * now the secondary core is starting up let it run its
 	 * calibrations, then wait for it to finish