tree 13a956eb9a1723bd3d5463230acbfc6513f3b034
parent 0e94f2ee0d1947ba6c2c00c3e971ff93ce8edec1
author Alexey Dobriyan <adobriyan@gmail.com> 1174741092 +0300
committer Wim Van Sebroeck <wim@iguana.be> 1174940771 +0000

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

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>