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[PATCH] tlclk: fix handling of device major 

tlclk calls register_chrdev() and permits register_chrdev() to allocate the
major, but it promptly forgets what that major was.  So if there's no hardware
present you still get "telco_clock" appearing in /proc/devices and, I assume,
an oops reading /proc/devices if tlclk was a module.

Fix.

Mark, I'd suggest that that we not call register_chrdev() until _after_ we've
established that the hardware is present.

Cc: Mark Gross <mgross@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-03-26 01:37:31 -08:00 committed by Linus Torvalds
parent 3e88c17d40
commit 222b9f933a
1 changed files with 1 additions and 0 deletions
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1
drivers/char/tlclk.c
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@ -767,6 +767,7 @@ static int __init tlclk_init(void)
printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major); printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major);
return ret; return ret;
} }
tlclk_major = ret;
alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL); alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
if (!alarm_events) if (!alarm_events)
goto out1; goto out1;