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由 Alexey Dobriyan 提交于
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: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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