Commit 8e009118 authored Sep 06, 2017 by Dmitry Torokhov

Input: uinput - allow FF requests to time 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>

parent 8446b32b

drivers/input/misc/uinput.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -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: