When changing the fd, reset our grab state to ungrabbed

Previously, calling grabbing a device after changing the fd was a no-op
because libevdev's grab state didn't match the fd:

libevdev_grab(LIBEVDEV_GRAB);
  .. fd is grabbed
  .. internal state is 'grabbed'
libevdev_change_fd();
  .. new fd is ungrabbed
  .. internal state is 'grabbed'
libevdev_grab(LIBEVDEV_GRAB);
  .. argument matches internal state and we exit without grabbing the device

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/libevdev/libevdev.c b/libevdev/libevdev.c
index 41bfd25..de0c476 100644
--- a/libevdev/libevdev.c
+++ b/libevdev/libevdev.c
@@ -311,6 +311,7 @@ libevdev_change_fd(struct libevdev *dev, int fd)
 		return -1;
 	}
 	dev->fd = fd;
+	dev->grabbed = LIBEVDEV_UNGRAB;
 	return 0;
 }