linux-kernel - [PATCH] x86: mcheck: call put_device on device

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Date:	Fri, 29 Nov 2013 21:28:48 +0100
From:	Levente Kurusa <levex@...ux.com>
To:	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tony Luck <tony.luck@...el.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	x86@...nel.org, EDAC <linux-edac@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: mcheck: call put_device on device_register failure

This patch adds a call to put_device() when the device_register()
call has failed. This is required so that the last reference to the
device is given up.

Signed-off-by: Levente Kurusa <levex@...ux.com>
---
 arch/x86/kernel/cpu/mcheck/mce.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index b3218cd..a389c1d 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2272,8 +2272,10 @@ static int mce_device_create(unsigned int cpu)
 	dev->release = &mce_device_release;

 	err = device_register(dev);
-	if (err)
+	if (err) {
+		put_device(dev);
 		return err;
+	}

 	for (i = 0; mce_device_attrs[i]; i++) {
 		err = device_create_file(dev, mce_device_attrs[i]);
-- 
1.8.1.2
--
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