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authorAlex Frid <afrid@nvidia.com>2011-10-06 21:19:40 -0700
committerDan Willemsen <dwillemsen@nvidia.com>2011-11-30 21:49:37 -0800
commit41179b7cfbe0309cfd0bd459639d55b49c4fde5d (patch)
treefb8351aa5880c99de8818ab2567dea04a30398a1 /arch
parentc9bc7e2f81aed42ccce0dea4e52d47a4e3b684c5 (diff)
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 <afrid@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Rebase-Id: Ref5015bb8336d8106c80fa390911ff0371b3ec57
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-tegra/cpu-tegra.c4
1 files changed, 3 insertions, 1 deletions
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;
}