diff options
| author | Sivaram Nair <sivaramn@nvidia.com> | 2012-12-18 13:52:54 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-03 13:11:05 +0100 |
| commit | 92638e2facc5330475c7d558acec77721c3214e4 (patch) | |
| tree | 121ddcb3c7f9dd13330b5156d385b648c19f35c1 /drivers/cpuidle | |
| parent | 0e5537b30d3029d784226ab51c2b923d1155b553 (diff) | |
| download | linux-stable-92638e2facc5330475c7d558acec77721c3214e4.tar.gz linux-stable-92638e2facc5330475c7d558acec77721c3214e4.tar.bz2 linux-stable-92638e2facc5330475c7d558acec77721c3214e4.zip | |
cpuidle / coupled: fix ready counter decrement
The ready_waiting_counts atomic variable is compared against the wrong
online cpu count. The latter is computed incorrectly using logical-OR
instead of bit-OR. This patch fixes that.
Signed-off-by: Sivaram Nair <sivaramn@nvidia.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Colin Cross <ccross@android.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/coupled.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index 3265844839bf..2a297f86dbad 100644 --- a/drivers/cpuidle/coupled.c +++ b/drivers/cpuidle/coupled.c @@ -209,7 +209,7 @@ inline int cpuidle_coupled_set_not_ready(struct cpuidle_coupled *coupled) int all; int ret; - all = coupled->online_count || (coupled->online_count << WAITING_BITS); + all = coupled->online_count | (coupled->online_count << WAITING_BITS); ret = atomic_add_unless(&coupled->ready_waiting_counts, -MAX_WAITING_CPUS, all); |