On Tuesday, March 22, 2011, Sarah Sharp wrote: > On Mon, Mar 21, 2011 at 11:51:12PM +0100, Rafael J. Wysocki wrote: > > On Monday, March 21, 2011, Sarah Sharp wrote: > > > I compiled 2.6.38 with CONFIG_PCI_MMCONFIG=y, and I'm no longer getting > > > "irq nobody cared" messages. However, PCI express hot plug seems to > > > just not work for the xHCI PCI device. Nothing appears in dmesg when I > > > plug in the Express Card, and the device doesn't appear in lspci. > > > However, I can get the card to show up if I run > > > > > > echo 1 > /sys/bus/pci/rescan > > > > > > PCI hot-remove doesn't seem to work either. The xHCI driver notices the > > > device got removed when the debugging polling loop runs, but the > > > driver's PCI remove functions are never called. A rescan of the bus > > > doesn't help, and the device still shows up in lspci (although all the > > > registers are read as 0xffff). dmesg and lspci after the device has been > > > removed is attached. > > > > > > I've tried turning on all the PCI config options that look relavant; my > > > .config is attached. I've turned on PCI debug too. The only thing that > > > looks PCI related that I don't have turned on is ACPI_PCI_SLOT. Do I > > > need that? > > > > > > I'm not sure how to debug this hot plug issue further. > > > > Well, we still don't seem to call the _OSC on this machine. At least your > > dmesg output doesn't indicate so. > > > > Do you have the patch from: > > > > https://patchwork.kernel.org/patch/604371/ > > > > applied? > > No, it was just 2.6.38. When I applied that patch, PCI hot plug worked! Cool. :-) > dmesg is attached. Can the patch get queued for 2.6.38 stable, or is it > just a hack? It's not a hack and it's goint to -stable, but it hasn't been merged by Linus yet (AFAICS). Thanks, Rafael -- 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
