[ resending from bugzilla as requested ]+ On Lenovo t440p machine I've xhci_hcd port that doesn't work after enabling runtime PM: 1. Just after boot, rmmod xhci_hcd and modprobe it again: [ 120.595176] xhci_hcd 0000:00:14.0: enabling bus mastering [ 120.595188] xhci_hcd 0000:00:14.0: xHCI Host Controller [ 120.595194] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1 [ 120.595344] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported [ 120.595368] xhci_hcd 0000:00:14.0: irq 29 for MSI/MSI-X [ 120.595420] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 120.595421] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 120.595422] usb usb1: Product: xHCI Host Controller [ 120.595422] usb usb1: Manufacturer: Linux 3.17.0+ xhci_hcd [ 120.595423] usb usb1: SerialNumber: 0000:00:14.0 [ 120.595512] hub 1-0:1.0: USB hub found [ 120.595533] hub 1-0:1.0: 15 ports detected [ 120.597745] xhci_hcd 0000:00:14.0: xHCI Host Controller [ 120.597748] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2 [ 120.597782] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003 [ 120.597783] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 120.597784] usb usb2: Product: xHCI Host Controller [ 120.597785] usb usb2: Manufacturer: Linux 3.17.0+ xhci_hcd [ 120.597785] usb usb2: SerialNumber: 0000:00:14.0 [ 120.597865] hub 2-0:1.0: USB hub found [ 120.597882] hub 2-0:1.0: 6 ports detected [ 120.598504] usb: failed to peer usb2-port4 and usb1-port3 by location (usb2-port4:none) (usb1-port3:usb2-port3) [ 120.598506] usb usb2-port4: failed to peer to usb1-port3 (-16) [ 120.598809] usb: failed to peer usb2-port6 and usb1-port3 by location (usb2-port6:none) (usb1-port3:usb2-port3) [ 120.598810] usb usb2-port6: failed to peer to usb1-port3 (-16) [ 120.909228] usb 1-5: new full-speed USB device number 2 using xhci_hcd [ 121.038496] usb 1-5: No LPM exit latency info found, disabling LPM. [ 121.046968] usb 1-5: New USB device found, idVendor=058f, idProduct=9540 [ 121.046971] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 121.046972] usb 1-5: Product: EMV Smartcard Reader [ 121.046974] usb 1-5: Manufacturer: Generic [ 121.213054] usb 1-7: new full-speed USB device number 3 using xhci_hcd [ 121.343171] usb 1-7: New USB device found, idVendor=138a, idProduct=0017 [ 121.343174] usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=1 [ 121.343175] usb 1-7: SerialNumber: bd077adaec22 [ 121.456997] usb 1-12: new high-speed USB device number 4 using xhci_hcd [ 121.709358] usb 1-12: New USB device found, idVendor=04f2, idProduct=b39a [ 121.709362] usb 1-12: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 121.709363] usb 1-12: Product: Integrated Camera [ 121.709364] usb 1-12: Manufacturer: SunplusIT INC. [ 121.779568] uvcvideo: Found UVC 1.00 device Integrated Camera (04f2:b39a) [ 121.788387] input: Integrated Camera as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input20 2. apply power_settings: % for F in /sys/bus/usb/devices/*; do test -f $F/power/control && echo auto | sudo tee $F/power/control; done [ 947.442248] xhci_hcd 0000:00:14.0: PME# enabled [ 947.482119] xhci_hcd 0000:00:14.0: power state changed by ACPI to D3cold 3. disable XHCI in /proc/acpi/wakeup: % echo XHCI | sudo tee /proc/acpi/wakeup % cat /proc/acpi/wakeup| grep XHCI XHCI S3 *disabled pci:0000:00:14.0 4. plug some USB device to port: [ 1072.724884] xhci_hcd 0000:00:14.0: power state changed by ACPI to D0 [ 1072.828927] xhci_hcd 0000:00:14.0: PME# disabled [ 1072.828951] xhci_hcd 0000:00:14.0: enabling bus mastering [ 1072.829114] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x40 [usbcore] returns -16 [ 1072.933036] xhci_hcd 0000:00:14.0: PME# enabled [ 1072.972798] xhci_hcd 0000:00:14.0: power state changed by ACPI to D3cold 5. device is not detected and not present in lsusb. I'm using smartphone as device and it's starts charging (but doesn't display 'connected' message). Reenabling xhci in /proc/acpi/wakeup doesn't help. Always reproduces. 6. Unplug device, rmmod xhci_hcd and repeat everything again except 3 (don't disable XHCI in /proc/acpi/wakeup): ... [ 1240.128339] xhci_hcd 0000:00:14.0: PME# enabled [ 1240.176209] xhci_hcd 0000:00:14.0: power state changed by ACPI to D3cold 7. Plug device again (XHCI is enabled in /proc/acpi/wakeup): [ 1295.636130] xhci_hcd 0000:00:14.0: power state changed by ACPI to D0 [ 1295.740136] xhci_hcd 0000:00:14.0: PME# disabled [ 1295.740150] xhci_hcd 0000:00:14.0: enabling bus mastering [ 1295.740238] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x40 [usbcore] returns -16 [ 1295.844209] xhci_hcd 0000:00:14.0: PME# enabled [ 1295.876043] xhci_hcd 0000:00:14.0: power state changed by ACPI to D3cold [ 1296.667761] xhci_hcd 0000:00:14.0: power state changed by ACPI to D0 [ 1296.771757] xhci_hcd 0000:00:14.0: PME# disabled [ 1296.771772] xhci_hcd 0000:00:14.0: enabling bus mastering [ 1296.771860] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x40 [usbcore] returns -16 [ 1296.987688] usb 1-6: new high-speed USB device number 5 using xhci_hcd [ 1297.118812] usb 1-6: New USB device found, idVendor=0fca, idProduct=8012 [ 1297.118815] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1297.118817] usb 1-6: Product: RIM Network Device [ 1297.118818] usb 1-6: Manufacturer: Research In Motion, Ltd. [ 1297.118819] usb 1-6: SerialNumber: EBD1BA7B6C5E4765D017A580236520AB97994D33 [ 1297.139270] rndis_host 1-6:1.0: rndis media connect [ 1297.161920] rndis_host 1-6:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-6, RNDIS device, 96:eb:cd:0d:5f:e9 [ 1297.173486] rndis_host 1-6:1.0 usb6: renamed from usb0 [ 1297.191666] systemd-udevd[19181]: renamed network interface usb0 to usb6 So now it works as expected. I'm disabling everything from /proc/acpi/wakeup to make sure that laptop will not be resumed by any USB device. Full dmesg attached to https://bugzilla.kernel.org/show_bug.cgi?id=85701 -- WBR, Dmitry -- 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
