p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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>
This commit is contained in:
Don Zickus 2015-08-10 12:06:53 -04:00 committed by Jiri Kosina
parent a1c173dac1
commit 3af4e5a951
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/hid/usbhid/hid-core.c
View File

@ -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);