Messages in this thread | | | Subject | Re: [PATCH] Disable INTx when enabling MSI in forcedeth | From | Benjamin Herrenschmidt <> | Date | Wed, 22 Nov 2006 18:09:45 +1100 |
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On Tue, 2006-11-21 at 18:42 -0800, Linus Torvalds wrote: > > On Tue, 21 Nov 2006, Daniel Barkalow wrote: > > > > My nVidia ethernet card doesn't disable its own INTx when MSI is > > enabled. This causes a steady stream of spurious interrupts that > > eventually kills my SATA IRQ if MSI is used with forcedeth, which is > > true by default. Simply disabling the INTx interrupt takes care of it. > > > > This is against -stable, and would be suitable once someone who knows the > > code verifies that it's correct. > > I _really_ think that we should do this in pci_msi_enable().
Agreed.
> Screw cards that are not PCI-2.3 compliant - just make the rule be that if > you use MSI, you _have_ to allow us to set the disable-INTx bit. It's then > up to the drivers to decide if they can use MSI or not. > > (Even a number of cards that are not PCI-2.3 may simply not _implement_ > the disable-INTx bit, and in that case, they can use MSI if they disable > INTx automatically - the ). > > Comments?
Do we know of any card that wants MSIs _and_ uses that bit for some non-compliant purpose ?
Ben.
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