On 21 September 2016 at 13:10, Ritesh Raj Sarraf <rrs@xxxxxxxxxxxxxx> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > Hi Alan, > > On Tue, 2016-09-20 at 10:16 -0400, Alan Stern wrote: >> This is a lot better. No more I/O errors. >> >> We still have irregular suspends and resumes, but that's to be >> expected. More worrying are the spontaneous disconnects. They don't >> seem to be related to the suspend/resume activity. >> >> You can disable suspend for this device entirely by doing: >> >> echo on >/sys/bus/usb/devices/2-4/power/control >> >> I'm afraid that this won't prevent the device from disconnecting >> itself, though. This appears to be some sort of hardware bug that >> can't be fixed in software. > > I'm not sure what you were referring to when you said "No more I/O errors". > But I still got these errors today, with all patches applied. > > Sep 21 14:58:11 learner kernel: usb 2-4: new high-speed USB device number 98 > using xhci_hcd > Sep 21 14:58:18 learner kernel: usb 2-4: new high-speed USB device number 102 > using xhci_hcd > Sep 21 14:58:24 learner kernel: usb 2-4: new high-speed USB device number 106 > using xhci_hcd > Sep 21 14:58:31 learner kernel: usb 2-4: new high-speed USB device number 114 > using xhci_hcd > Sep 21 14:58:41 learner kernel: usb 2-4: new high-speed USB device number 12 > using xhci_hcd > Sep 21 14:58:41 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 14:58:41 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 14:58:41 learner kernel: usb 2-4: new high-speed USB device number 13 > using xhci_hcd > Sep 21 14:58:41 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 14:58:41 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 14:58:42 learner kernel: usb 2-4: new high-speed USB device number 14 > using xhci_hcd > Sep 21 14:58:42 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 14:58:42 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 14:58:42 learner kernel: usb 2-4: device not accepting address 14, error > - -71 > Sep 21 14:58:42 learner kernel: usb 2-4: new high-speed USB device number 15 > using xhci_hcd > Sep 21 14:58:42 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 14:58:42 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 14:58:43 learner kernel: usb 2-4: device not accepting address 15, error > - -71 > Sep 21 14:58:43 learner kernel: usb usb2-port4: unable to enumerate USB device > Sep 21 16:19:39 learner kernel: ahci 0000:00:1f.2: port does not support device > sleep > Sep 21 16:19:39 learner kernel: NMI watchdog: enabled on all CPUs, permanently > consumes one hw- > Sep 21 16:19:39 learner kernel: EXT4-fs (dm-0): re-mounted. Opts: > errors=remount-ro,data=ordere > Sep 21 16:19:39 learner kernel: EXT4-fs (sda6): re-mounted. Opts: > data=ordered,commit=0 > Sep 21 16:19:39 learner kernel: EXT4-fs (dm-3): re-mounted. Opts: > errors=remount-ro,data=writeb > Sep 21 16:19:39 learner kernel: usb 2-4: new high-speed USB device number 16 > using xhci_hcd > Sep 21 16:19:39 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 16:19:40 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 16:19:40 learner kernel: usb 2-4: new high-speed USB device number 17 > using xhci_hcd > Sep 21 16:19:40 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 16:19:40 learner kernel: usb 2-4: device descriptor read/64, error -71 > Sep 21 16:19:40 learner kernel: usb 2-4: new high-speed USB device number 18 > using xhci_hcd > Sep 21 16:19:40 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 16:19:41 learner kernel: usb 2-4: Device not responding to setup address. > Sep 21 16:19:41 learner kernel: usb 2-4: device not accepting address 18, error > - -71 > Sep 21 16:19:41 learner kernel: usb 2-4: new high-speed USB device number 19 > using xhci_hcd > I am pretty sure the memstick driver causes additional access to the usb device without first calling pm_runtime_get_sync(). To eliminate those cases from causing the issues, could you try disable the memstick driver all-together? Kind regards Uffe -- 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
