On Tue, 1 Mar 2016, Daniel Fraga wrote: > On Tue, 1 Mar 2016 10:25:30 -0500 (EST) > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > Now we're making progress! That shows a problem right there; we ought > > to have more stuff about 3-1.6 between those two lines. > > > > The next patch adds some more debugging output. For this test you > > don't even have to suspend the system; all I need to see is the output > > for 3-1.6 during boot-up and shortly thereafter. > > No new messages during boot-up (I tried to reboot 3 times). I just got the following: > > Mar 1 16:33:55 tux kernel: [ 3.558535] usb 3-1.6: new full-speed USB device number 6 using ehci-pci No messages about "usbhid_start urb" or "no input endpoint!" or "usbhid_start fail urb"? That means usbhid_start() isn't getting called. Which means the device in question probably isn't being used at all. Do you know what this device is? What does /sys/kernel/debug/usb/devices show? Let's make sure this is really what's happening. Please try this patch. 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 @@ -1159,6 +1159,7 @@ static int usbhid_start(struct hid_devic usbhid_set_leds(hid); device_set_wakeup_enable(&dev->dev, 1); } + dev_info(&usbhid->intf->dev, "usbhid_start -> 0, %p\n", usbhid->urbin); return 0; fail: @@ -1169,6 +1170,7 @@ fail: usbhid->urbout = NULL; usbhid->urbctrl = NULL; hid_free_buffers(dev, hid); + dev_info(&usbhid->intf->dev, "usbhid_start -> %d\n", ret); return ret; } @@ -1178,6 +1180,7 @@ static void usbhid_stop(struct hid_devic if (WARN_ON(!usbhid)) return; + dev_info(&usbhid->intf->dev, "usbhid_stop\n"); if (hid->quirks & HID_QUIRK_ALWAYS_POLL) usbhid->intf->needs_remote_wakeup = 0; @@ -1366,11 +1369,13 @@ static int usbhid_probe(struct usb_inter goto err_free; } + dev_info(&intf->dev, "usbhid_probe -> %d\n", 0); return 0; err_free: kfree(usbhid); err: hid_destroy_device(hid); + dev_info(&intf->dev, "usbhid_probe -> %d\n", ret); return ret; } -- 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
