As Alan Stern points out [1], the PME signal is not enabled when controller is in D3, therefore it's not being woken up when new deivces get plugged in. Workaround this bug by preventing the controller enters D3 power state. [1] https://www.spinics.net/lists/linux-usb/msg157462.html Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> --- drivers/usb/host/ehci-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 93326974ff4b..616685f83954 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -181,6 +181,8 @@ static int ehci_pci_setup(struct usb_hcd *hcd) if (pdev->device == 0x7808) { ehci->use_dummy_qh = 1; ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround\n"); + + pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; } break; case PCI_VENDOR_ID_VIA: -- 2.13.0 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
