diff options
| author | Sivaram Nair <sivaramn@nvidia.com> | 2012-12-18 13:52:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-17 08:46:22 -0800 |
| commit | 14495b052a8abea799ba56c71b38ceeef209e3f0 (patch) | |
| tree | c52226333aec5934ee13ce2f39633f42a0f7a5c9 /drivers/cpuidle | |
| parent | 077264613be71c5698ccb7ff6f97ec8cf3f41317 (diff) | |
cpuidle / coupled: fix ready counter decrement
commit 92638e2facc5330475c7d558acec77721c3214e4 upstream.
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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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); |