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Commit 4d4bf995 authored by Julien Moutinho's avatar Julien Moutinho Committed by Dmitry Torokhov
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Input: mousedev - signal that device is writable in mousedev_poll() 



The Microsoft ImPS/2 mouse protocol being bidirectionnal (sic)
one may have to write in /dev/input/mice; and that works better
if select() does not hang.

Signed-off-by: default avatarJulien Moutinho <julm+linux@savines.alpes.fr.eu.org>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 20da92de

drivers/input/mousedev.c

+7 −2
Original line number Diff line number Diff line
@@ -765,10 +765,15 @@ static unsigned int mousedev_poll(struct file *file, poll_table *wait) 
{

	struct mousedev_client *client = file->private_data;

	struct mousedev *mousedev = client->mousedev;

	unsigned int mask;



	poll_wait(file, &mousedev->wait, wait);

	return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) |

		(mousedev->exist ? 0 : (POLLHUP | POLLERR));



	mask = mousedev->exist ? POLLOUT | POLLWRNORM : POLLHUP | POLLERR;

	if (client->ready || client->buffer)

		mask |= POLLIN | POLLRDNORM;



	return mask;

}



static const struct file_operations mousedev_fops = {