Input: evdev - signal that device is writable in evdev_poll() (c18fb139) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/input/evdev.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -403,10 +403,15 @@ static unsigned int evdev_poll(struct file file, poll_table wait)
		{
		struct evdev_client *client = file->private_data;
		struct evdev *evdev = client->evdev;
		unsigned int mask;

		poll_wait(file, &evdev->wait, wait);
		return ((client->head == client->tail) ? 0 : (POLLIN \| POLLRDNORM)) \|
		(evdev->exist ? 0 : (POLLHUP \| POLLERR));

		mask = evdev->exist ? POLLOUT \| POLLWRNORM : POLLHUP \| POLLERR;
		if (client->head != client->tail)
		mask \|= POLLIN \| POLLRDNORM;

		return mask;
		}

		#ifdef CONFIG_COMPAT