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cpuidle / coupled: fix ready counter decrement

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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>
This commit is contained in:
Sivaram Nair 2012-12-18 13:52:54 +01:00 committed by Rafael J. Wysocki
parent 0e5537b30d
commit 92638e2fac
1 changed files with 1 additions and 1 deletions
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drivers/cpuidle/coupled.c
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@ -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);