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path: root/drivers/xen/mcelog.c
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Diffstat (limited to 'drivers/xen/mcelog.c')
-rw-r--r--drivers/xen/mcelog.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/xen/mcelog.c b/drivers/xen/mcelog.c
index 6ab6a79c38a5..a493c7315e94 100644
--- a/drivers/xen/mcelog.c
+++ b/drivers/xen/mcelog.c
@@ -393,14 +393,25 @@ static int bind_virq_for_mce(void)
static int __init xen_late_init_mcelog(void)
{
+ int ret;
+
/* Only DOM0 is responsible for MCE logging */
- if (xen_initial_domain()) {
- /* register character device /dev/mcelog for xen mcelog */
- if (misc_register(&xen_mce_chrdev_device))
- return -ENODEV;
- return bind_virq_for_mce();
- }
+ if (!xen_initial_domain())
+ return -ENODEV;
+
+ /* register character device /dev/mcelog for xen mcelog */
+ ret = misc_register(&xen_mce_chrdev_device);
+ if (ret)
+ return ret;
+
+ ret = bind_virq_for_mce();
+ if (ret)
+ goto deregister;
- return -ENODEV;
+ return 0;
+
+deregister:
+ misc_deregister(&xen_mce_chrdev_device);
+ return ret;
}
device_initcall(xen_late_init_mcelog);