From: Don Zickus Date: Mon, 10 Aug 2015 16:06:53 +0000 (-0400) Subject: HID: usbhid: Fix the check for HID_RESET_PENDING in hid_io_error X-Git-Tag: firefly_0821_release~3679^2~137 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=deeff0eaa0743aaa42c2ffc112604fb8a74bef5e;p=firefly-linux-kernel-4.4.55.git HID: usbhid: Fix the check for HID_RESET_PENDING in hid_io_error commit 3af4e5a95184d6d3c1c6a065f163faa174a96a1d upstream. It was reported that after 10-20 reboots, a usb keyboard plugged into a docking station would not work unless it was replugged in. Using usbmon, it turns out the interrupt URBs were streaming with callback errors of -71 for some reason. The hid-core.c::hid_io_error was supposed to retry and then reset, but the reset wasn't really happening. The check for HID_NO_BANDWIDTH was inverted. Fix was simple. Tested by reporter and locally by me by unplugging a keyboard halfway until I could recreate a stream of errors but no disconnect. Signed-off-by: Don Zickus Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index ada164e1b3a1..de904e6a4ab7 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -180,7 +180,7 @@ static void hid_io_error(struct hid_device *hid) if (time_after(jiffies, usbhid->stop_retry)) { /* Retries failed, so do a port reset unless we lack bandwidth*/ - if (test_bit(HID_NO_BANDWIDTH, &usbhid->iofl) + if (!test_bit(HID_NO_BANDWIDTH, &usbhid->iofl) && !test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) { schedule_work(&usbhid->reset_work);