[PATCH -next] perf: fix error return code

[PATCH -next] perf: fix error return code

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 kernel/events/core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 2427107..7504140 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6033,8 +6033,10 @@ skip_type:
 		goto got_cpu_context;
 
 	pmu->pmu_cpu_context = alloc_percpu(struct perf_cpu_context);
-	if (!pmu->pmu_cpu_context)
+	if (!pmu->pmu_cpu_context) {
+		ret = -ENOMEM;
 		goto free_dev;
+	}
 
 	for_each_possible_cpu(cpu) {
 		struct perf_cpu_context *cpuctx;

[tip:perf/urgent] perf: Fix error return code

[tip-bot for Wei Yongjun]

Commit-ID:  c481420248c6730246d2a1b1773d5d7007ae0835
Gitweb:     http://git.kernel.org/tip/c481420248c6730246d2a1b1773d5d7007ae0835
Author:     Wei Yongjun <yongjun_wei@trendmicro.com.cn>
AuthorDate: Fri, 12 Apr 2013 11:05:54 +0800
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 12 Apr 2013 06:33:56 +0200

perf: Fix error return code

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@trendmicro.com.cn>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 kernel/events/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 7f0d67e..7e0962e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5987,6 +5987,7 @@ 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;