linux-kernel - [tip:perfcounters/core] perf_counter: x86: proper error propagation for the x86 hw_perf_counter

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Message-ID: <tip-1763e5959b2302761b10e84df38165fac86bd1a5@git.kernel.org>
Date:	Wed, 1 Apr 2009 10:13:56 GMT
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulus@...ba.org, hpa@...or.com,
	mingo@...hat.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: x86: proper error propagation for the x86 hw_perf_counter_init()

Commit-ID:  1763e5959b2302761b10e84df38165fac86bd1a5
Gitweb:     http://git.kernel.org/tip/1763e5959b2302761b10e84df38165fac86bd1a5
Author:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Mon, 30 Mar 2009 19:07:09 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 1 Apr 2009 11:33:35 +0200

perf_counter: x86: proper error propagation for the x86 hw_perf_counter_init()

Now that Paul cleaned up the error propagation paths, pass down the
x86 error as well.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Acked-by: Paul Mackerras <paulus@...ba.org>
LKML-Reference: <20090330171023.792822360@...llo.nl>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/cpu/perf_counter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 7aab177..b8885cc 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -954,7 +954,7 @@ hw_perf_counter_init(struct perf_counter *counter)
 
 	err = __hw_perf_counter_init(counter);
 	if (err)
-		return NULL;
+		return ERR_PTR(err);
 
 	return &x86_perf_counter_ops;
 }
--
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