On Thu, 14 Jun 2007, Rafael J. Wysocki wrote: > > Hmmm... If you turn on CONFIG_USB_DEBUG, what shows up in > > /sys/class/usb_host/usb_hostN/registers where N is the bus number of > > the controller? > > bus pci, device 0000:00:1d.7 (driver 10 Dec 2004) > EHCI Host Controller > EHCI 1.00, hcd state 4 > ownership 00000001 > SMI sts/enable 0x80080000 > structural params 0x00103206 > capability params 0x00006871 > status 1008 Halt FLR > command 010000 (park)=0 ithresh=1 period=1024 HALT > intrenable 37 IAA FATAL PCD ERR INT > uframe 36f1 > port 1 status 701000 POWER sig=se0 > port 2 status 701000 POWER sig=se0 > port 3 status 701000 POWER sig=se0 > port 4 status 701000 POWER sig=se0 > port 5 status 701000 POWER sig=se0 > port 6 status 701000 POWER sig=se0 > irq normal 0 err 0 reclaim 0 (lost 0) > complete 0 unlink 0 Nothing special there. > > Also, can you post a dmesg log (with CONFIG_USB_DEBUG enabled) showing > > what happens during the suspend and immediate resume? > > [That's after I have disabled the wakeup on the EHCI controller.] ... > Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0000 > ehci_hcd 0000:00:1d.7: GetStatus port 3 status 001020 POWER sig=se0 OCC > hub 1-0:1.0: over-current change on port 3 > hub 1-0:1.0: trying to enable port power on non-switchable hub > done. > ehci_hcd 0000:00:1d.7: GetStatus port 4 status 001020 POWER sig=se0 OCC > hub 1-0:1.0: over-current change on port 4 > hub 1-0:1.0: trying to enable port power on non-switchable hub > ehci_hcd 0000:00:1d.7: GetStatus port 5 status 001020 POWER sig=se0 OCC > hub 1-0:1.0: over-current change on port 5 > hub 1-0:1.0: trying to enable port power on non-switchable hub > ehci_hcd 0000:00:1d.7: GetStatus port 6 status 001020 POWER sig=se0 OCC > hub 1-0:1.0: over-current change on port 6 > hub 1-0:1.0: trying to enable port power on non-switchable hub That's odd. Where could these overcurrent changes be coming from? And how come they don't show up on ports 1 and 2? There's an excellent chance that they are responsible for your immediate resumes. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
