HID: usbhid: Fix the check for HID_RESET_PENDING in hid_io_error

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 <dzickus@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 1a23d78..36712e9 100644 (file)
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -164,7 +164,7 @@ 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);