From 41179b7cfbe0309cfd0bd459639d55b49c4fde5d Mon Sep 17 00:00:00 2001 From: Alex Frid Date: Thu, 6 Oct 2011 21:19:40 -0700 Subject: ARM: tegra: power: Lock force_policy_max update (cherry picked from commit dc2f416df4664f5ddeba6f14f41cd6bcd717abab) (cherry picked from commit caa79c7d6219231d02260ae91876eff4f411dee8) Change-Id: I29eb42c73a7e3cd3f401e8b5d44bcf3f06478c2c Reviewed-on: http://git-master/r/61021 Tested-by: Aleksandr Frid Reviewed-by: Yu-Huan Hsu Rebase-Id: Ref5015bb8336d8106c80fa390911ff0371b3ec57 --- arch/arm/mach-tegra/cpu-tegra.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-tegra') diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c index 1524a481f2f9..7ff2a4143280 100644 --- a/arch/arm/mach-tegra/cpu-tegra.c +++ b/arch/arm/mach-tegra/cpu-tegra.c @@ -62,11 +62,13 @@ static int force_policy_max_set(const char *arg, const struct kernel_param *kp) int ret; bool old_policy = force_policy_max; - ret = param_set_bool(arg, kp); + mutex_lock(&tegra_cpu_lock); + ret = param_set_bool(arg, kp); if ((ret == 0) && (old_policy != force_policy_max)) tegra_cpu_set_speed_cap(NULL); + mutex_unlock(&tegra_cpu_lock); return ret; } -- cgit v1.2.3