[+cc linux-pci, linux-pm, Rafael, Alex] > https://bugzilla.kernel.org/show_bug.cgi?id=85311 Pali reported: > Every time when I open LID on my notebook I see tons of new error lines in dmesg > with kernel 3.17-rc6. And more lines come from radeon card (dmesg log is attached). > I do not see these log lines with 3.13 kernel, so this is regression. The new error lines are (from the bugzilla attachment): i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment radeon 0000:01:00.0: Max Payload Size 16384, but upstream 0000:00:01.0 set to 128; if necessary, use "pci=pcie_bus_safe" and report a bug pci_bus 0000:02: Allocating resources pci_bus 0000:03: Allocating resources pci_bus 0000:04: Allocating resources pci_bus 0000:05: Allocating resources pci_bus 0000:06: Allocating resources pci_bus 0000:0e: Allocating resources i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment radeon 0000:01:00.0: Max Payload Size 16384, but upstream 0000:00:01.0 set to 128; if necessary, use "pci=pcie_bus_safe" and report a bug i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment radeon 0000:01:00.0: Max Payload Size 16384, but upstream 0000:00:01.0 set to 128; if necessary, use "pci=pcie_bus_safe" and report a bug i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment radeon 0000:01:00.0: Max Payload Size 16384, but upstream 0000:00:01.0 set to 128; if necessary, use "pci=pcie_bus_safe" and report a bug i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment ... Using "radeon.runpm=0" gets rid of the radeon MPS complaints, but not the others. Alex said (in the bugzilla): > When the radeon device is powered down, all the PCI registers and BARs read > back as ones. which is why you are seeing the radeon errors. Apparently the > pci runtime pm code does not properly ask the driver to power the card up > before accessing those registers. Unfortunately, I'm not that familiar with > the Linux runtime pm code. I have no idea about the i915 and apci messages. I haven't looked into this at all, so I don't know where this bug report belongs. Bjorn -- 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
