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

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Message-id: <007001ce3fce$58768be0$0963a3a0$%choi@samsung.com>
Date:	Tue, 23 Apr 2013 11:57:51 +0900
From:	Jonghwan Choi <jhbird.choi@...sung.com>
To:	'Jonghwan Choi' <jhbird.choi@...sung.com>,
	linux-kernel@...r.kernel.org
Cc:	stable@...r.kernel.org,
	'Wei Yongjun' <yongjun_wei@...ndmicro.com.cn>,
	'Peter Zijlstra' <a.p.zijlstra@...llo.nl>
Subject: [PATCH 3.8-stable] perf: Fix error return code

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

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

From: "Wei Yongjun <yongjun_wei@...ndmicro.com.cn>"

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@...ndmicro.com.cn>
Cc: a.p.zijlstra@...llo.nl
Cc: paulus@...ba.org
Cc: acme@...stprotocols.net
Link:
http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08
c2w1tngQ@...l.gmail.com
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 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

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