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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>
Andrew Morton преди 19 години
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222b9f933a
променени са 1 файла, в които са добавени 1 реда и са изтрити 0 реда
  1. 1 0
      drivers/char/tlclk.c

+ 1 - 0
drivers/char/tlclk.c

@@ -767,6 +767,7 @@ static int __init tlclk_init(void)
 		printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major);
 		return ret;
 	}
+	tlclk_major = ret;
 	alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
 	if (!alarm_events)
 		goto out1;