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Message-ID: <1355474528-13094-1-git-send-email-sivaramn@nvidia.com> Date: Fri, 14 Dec 2012 10:42:08 +0200 From: Sivaram Nair <sivaramn@...dia.com> To: <ccross@...roid.com>, <santosh.shilimkar@...com>, <khilman@...com>, <rjw@...k.pl>, <daniel.lezcano@...aro.org> CC: <linux-kernel@...r.kernel.org>, Sivaram Nair <sivaramn@...dia.com> Subject: [PATCH 1/1] 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@...dia.com> --- drivers/cpuidle/coupled.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index 3265844..2a297f8 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); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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