[PATCH 3.8-stable] perf: Fix error return code

[Jonghwan Choi]

3.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>"

commit c481420248c6730246d2a1b1773d5d7007ae0835 upstream.

Fix to return -ENOMEM in the allocation error case instead of 0
(if pmu_bus_running == 1), as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
Cc: a.p.zijlstra@xxxxxxxxx
Cc: paulus@xxxxxxxxx
Cc: acme@xxxxxxxxxxxxxxxxxx
Link:
http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08
c2w1tngQ@xxxxxxxxxxxxxx
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Jonghwan Choi <jhbird.choi@xxxxxxxxxxx>
---
 kernel/events/core.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 7b6646a..f6eba58 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5988,6 +5988,7 @@ skip_type:
 	if (pmu->pmu_cpu_context)
 		goto got_cpu_context;
 
+	ret = -ENOMEM;
 	pmu->pmu_cpu_context = alloc_percpu(struct perf_cpu_context);
 	if (!pmu->pmu_cpu_context)
 		goto free_dev;
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/