On Thu, 18 Feb 2016, Daniel Fraga wrote: > On Thu, 18 Feb 2016 14:30:15 -0500 (EST) > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > It looks like there's some problem in the usbhid driver. Apparently > > hid_start_in() gets some sort of error when it submits the input URB, > > because that URB doesn't show up in the usbmon output. > > > > Can you add a debugging line near the end of hid_post_reset() in > > drivers/hid/usbhid/hid-core.c to find out what the return value from > > hid_start_in() is? > > Yes, can you provide the patch (or the specific line you need) > so I can recompile it? Something like the patch below (untested). Alan Stern Index: usb-4.4/drivers/hid/usbhid/hid-core.c =================================================================== --- usb-4.4.orig/drivers/hid/usbhid/hid-core.c +++ usb-4.4/drivers/hid/usbhid/hid-core.c @@ -1458,6 +1458,7 @@ static int hid_post_reset(struct usb_int spin_unlock_irq(&usbhid->lock); hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0); status = hid_start_in(hid); + dev_info(&intf->dev, "post reset hid_start_in -> %d\n", status); if (status < 0) hid_io_error(hid); usbhid_restart_queues(usbhid); -- 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
