linux-kernel - [PATCH] x86, mce: Print warning if MCE handler fails to register /dev/mcelog

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Date:	Tue, 09 Apr 2013 12:19:31 -0600
From:	Khalid Aziz <khalid.aziz@...cle.com>
To:	tony.luck@...el.com, bp@...en8.de, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com
Cc:	x86@...nel.org, linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] x86, mce: Print warning if MCE handler fails to register
 /dev/mcelog

Print a warning if machine check handler fails to register
/dev/mcelog device.


Signed-off-by: Khalid Aziz <khalid.aziz@...cle.com>
---
 arch/x86/kernel/cpu/mcheck/mce.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 7bc1263..7b4c28c 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2412,7 +2412,8 @@ static __init int mcheck_init_device(void)
 	register_hotcpu_notifier(&mce_cpu_notifier);
 
 	/* register character device /dev/mcelog */
-	misc_register(&mce_chrdev_device);
+	if (misc_register(&mce_chrdev_device) != 0)
+		pr_warn("Failed to register mcelog device\n");
 
 	return err;
 }
-- 
1.7.10.4



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