On Thursday, August 7, 2008 4:28 pm Michael S. Tsirkin wrote: > In both 2.6.27-rc1 and 2.6.27-rc2, my laptop won't come out of > suspend to ram: it blinks the crescent one or twice, > and hangs. It does resume fine under 2.6.26. > > I bisected the problem and got the following commit: > > commit ce6fce4295ba727b36fdc73040e444bd1aae64cd > Author: Matthew Wilcox <matthew@xxxxxx> > Date: Fri Jul 25 15:42:58 2008 -0600 > > PCI MSI: Don't disable MSIs if the mask bit isn't supported > > David Vrabel has a device which generates an interrupt storm on the > INTx pin if we disable MSI interrupts altogether. Masking interrupts is > only a performance optimisation, so we can ignore the request to mask the > interrupt. > > Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> > Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> > > Reverting ce6fce4295ba727b36fdc73040e444bd1aae64cd > fixes resume from suspend to RAM for me. > > Steps to reproduce: > > Press Fn-F4 to suspend, press Fn to resume. > This works on 2.6.26, hangs on vanilla 2.6.27-rc1 > and 2.6.27-rc2, works on 2.6.27-rc2 with reverted ce6fce.. > > Bug added to bugzilla: http://bugzilla.kernel.org/show_bug.cgi?id=11283 I noted in the bug that I think this is a duplicate. Can you try pulling my for-linus branch into your tree to see if it fixes things for you? git pull git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6.git for-linus from inside your kernel tree should do it. Thanks, Jesse -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
