| Message ID | 20170907002112.14097-3-dmitry.torokhov@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 443151de90c6..c30704fa1a06 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -149,7 +149,11 @@ static int uinput_request_submit(struct uinput_device *udev, if (retval) goto out; - wait_for_completion(&request->done); + if (!wait_for_completion_timeout(&request->done, 30 * HZ)) { + retval = -ETIMEDOUT; + goto out; + } + retval = request->retval; out:
Previously uinput force feedback requests waited for the userspace indefinitely, which caused users to block when uinput server process become unresponsive. Let's establish a 30 seconds deadline for servicing upload and erase force feedback effect actions, so that users have a chance to abort stuck requests. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> --- drivers/input/misc/uinput.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)