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[PATCH] apm: clean up module initalization

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Clean up module initalization for apm.c.  I had started by auditing for
proper return code checks in misc_register, but I found that in the event
of an initalization failure, a proc file and a kernel thread were left
hanging out.  this patch properly cleans up those loose ends on any
initalization failure.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Neil Horman 2006-09-25 23:32:21 -07:00 committed by Linus Torvalds
parent 3a750363e6
commit c94a62aae6
1 changed files with 8 additions and 1 deletions
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9
arch/i386/kernel/apm.c
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@ -2339,6 +2339,7 @@ static int __init apm_init(void)
ret = kernel_thread(apm, NULL, CLONE_KERNEL | SIGCHLD);
if (ret < 0) {
printk(KERN_ERR "apm: disabled - Unable to start kernel thread.\n");
remove_proc_entry("apm", NULL);
return -ENOMEM;
}
@ -2348,7 +2349,13 @@ static int __init apm_init(void)
return 0;
}
misc_register(&apm_device);
/*
* Note we don't actually care if the misc_device cannot be registered.
* this driver can do its job without it, even if userspace can't
* control it. just log the error
*/
if (misc_register(&apm_device))
printk(KERN_WARNING "apm: Could not register misc device.\n");
if (HZ != 100)
idle_period = (idle_period * HZ) / 100;