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authorJulien Moutinho <julm+linux@savines.alpes.fr.eu.org>2010-07-15 23:27:56 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-07-15 23:52:52 -0700
commit4d4bf995ea873cc213c5abc5402af46ef490b8fd (patch)
treeae150da8d3053ce30f49509c8c030c6a9c53ccef /drivers/input/mousedev.c
parentInput: change input handlers to use bool when possible (diff)
downloadlinux-dev-4d4bf995ea873cc213c5abc5402af46ef490b8fd.tar.xz
linux-dev-4d4bf995ea873cc213c5abc5402af46ef490b8fd.zip
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: Julien Moutinho <julm+linux@savines.alpes.fr.eu.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/mousedev.c')
-rw-r--r--drivers/input/mousedev.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index d7a7a2fce745..d8f68f77007b 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -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 = {