On Mon, Feb 14, 2005 at 04:01:11PM +0100, Christophe Lucas wrote:
If PCI request regions fails, then someone else is using the hardware we wish to use. For that one case, calling pci_disable_device() is rather rude. See : http://www.ussg.iu.edu/hypermail/linux/kernel/0502.1/1061.html
Actually, that isn't necessarily true. If the request_regions call fails, that can mean there's a resource conflict. If so, leaving the device enabled is the worst possible thing to do as we'll now have two devices trying to respond to the same io accesses.
Incorrect. If request_region() fails, drivers are coded to _not_ touch the hardware. That's the entire purpose of the whole charade: to avoid having two devices responding to the same io accesses.
If your driver is talking to the hardware after request_region() fails, it is BROKEN plain and simple.
Jeff
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