From: Rafael J. Wysocki <rjw@xxxxxxx> After commit 415e12b2379239973feab91850b0dce985c6058a (PCI/ACPI: Request _OSC control once for each root bridge (v3)) we require MSI to be supported so that we use _OSC to request control of PCIe native features (hotplug, AER, PME), but that appears to be overkill and causes problems to happen on some systems. For this reason, request control of PCIe native features via _OSC even if MSI support is not enabled. Reported-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> --- Hi, Sarah, please test this patch on your machine causing PCIe hotplug problems on top of the patch from https://patchwork.kernel.org/patch/612171/ and on top of 2.6.38-rc6 or later. Thanks, Rafael --- drivers/acpi/pci_root.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) Index: linux-2.6/drivers/acpi/pci_root.c =================================================================== --- linux-2.6.orig/drivers/acpi/pci_root.c +++ linux-2.6/drivers/acpi/pci_root.c @@ -50,8 +50,7 @@ static int acpi_pci_root_start(struct ac #define ACPI_PCIE_REQ_SUPPORT (OSC_EXT_PCI_CONFIG_SUPPORT \ | OSC_ACTIVE_STATE_PWR_SUPPORT \ - | OSC_CLOCK_PWR_CAPABILITY_SUPPORT \ - | OSC_MSI_SUPPORT) + | OSC_CLOCK_PWR_CAPABILITY_SUPPORT) static const struct acpi_device_id root_device_ids[] = { {"PNP0A03", 0}, -- 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
