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[WATCHDOG] Semi-typical watchdog bug re early misc_register()

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It seems that some watchdog drivers are doing following mistake:

	rv = misc_register();
	if (rv < 0)
		return rv;
	rv = request_region();
	if (rv < 0) {
		misc_deregister();
		return rv;
	}

But, right after misc_register() returns, misc device can be opened and
ioctls interacting with hardware issued, and driver can do outb() to
port it doesn't own yet, because request_region() is still pending.

Here is my patch, compile-tested only.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Alexey Dobriyan 2007-03-24 15:58:12 +03:00 • committed by Wim Van Sebroeck
commit fb8f7ba077
5 changed files with 46 additions and 47 deletions
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