diff options
| author | Alex Frid <afrid@nvidia.com> | 2011-03-30 20:31:30 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-04-26 15:54:59 -0700 |
| commit | 3b6267d65f84e7acd312a10630726567cf770a13 (patch) | |
| tree | 196e282415db3b51a6166316959714cd17206676 /arch/arm/mach-tegra/cpu-tegra.c | |
| parent | abe026f5803b18c177d6369380acbc1478ca9190 (diff) | |
ARM: tegra: power: Modify auto-hotplug locking
Use cpufreq (cpu DFS) mutex for auto-hotplug (instead of a separate
one) to serialize cpu frequency scaling, hotplug, and CPU mode switch
operations.
Original-Change-Id: I7ea865894d1676c865294ab31a903248d9437534
Reviewed-on: http://git-master/r/24893
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Tested-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Change-Id: I906a23561c1567079a41590a30b29b3d52fa5de8
Diffstat (limited to 'arch/arm/mach-tegra/cpu-tegra.c')
| -rw-r--r-- | arch/arm/mach-tegra/cpu-tegra.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c index 34033dba7713..93caa24d8053 100644 --- a/arch/arm/mach-tegra/cpu-tegra.c +++ b/arch/arm/mach-tegra/cpu-tegra.c @@ -280,11 +280,10 @@ static int tegra_target(struct cpufreq_policy *policy, target_cpu_speed[policy->cpu] = freq; new_speed = throttle_governor_speed(tegra_cpu_highest_speed()); ret = tegra_update_cpu_speed(new_speed); -out: - mutex_unlock(&tegra_cpu_lock); - if (ret == 0) tegra_auto_hotplug_governor(new_speed); +out: + mutex_unlock(&tegra_cpu_lock); return ret; } @@ -395,7 +394,7 @@ static int __init tegra_cpufreq_init(void) throttle_lowest_index = table_data->throttle_lowest_index; throttle_highest_index = table_data->throttle_highest_index; #endif - ret = tegra_auto_hotplug_init(); + ret = tegra_auto_hotplug_init(&tegra_cpu_lock); if (ret) return ret; |