[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Dont call msi_unmap_pirq() if did not enabled msi
On Mon, Nov 16, 2009 at 10:15:46AM -0500, Konrad Rzeszutek Wilk wrote: > On Mon, Nov 16, 2009 at 08:00:30PM +0800, Joe Jin wrote: > > Hi, > > > > When device driver unload, it may call pci_disable_msi(), if msi did not > > enabled but do msi_unmap_pirq(), then later driver reload and without > > Where does that happen? That looks to be a driver bug as well. > > > msi, then will failed in request_irq() for irq_desc[irq]->chip valie is > > no_irq_chip. So when did not enable msi during driver initializing, then > > Won't that mean it is unusable? As in, you can't allocate an IRQ > to the device when the irq_desc[irq]->chip_value==no_irq_chip? Duh! I think I answered myself here and the answer is yes, otherwise you would not have hit this bug :-( _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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