XLibre/xf86-input-evdev
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Comment odd EVIOCGRAB behaviour and reshuffle conditions a bit.

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The reason for this rather weird approach is to ungrab immediately after
getting a successful grab. Evdev shouldn't be hogging the device if nothing
is done with it.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
This commit is contained in:
Peter Hutterer
2010-05-19 14:55:32 +10:00
parent ba78428ed5
commit b27d03b248
1 changed files with 9 additions and 4 deletions
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13
src/evdev.c
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@@ -1768,12 +1768,17 @@ EvdevProbe(InputInfoPtr pInfo)
int ignore_abs = 0, ignore_rel = 0;
EvdevPtr pEvdev = pInfo->private;
if (pEvdev->grabDevice && ioctl(pInfo->fd, EVIOCGRAB, (void *)1)) {
/* If grabDevice is set, ungrab immediately since we only want to grab
* between DEVICE_ON and DEVICE_OFF. If we never get DEVICE_ON, don't
* hold a grab. */
if (pEvdev->grabDevice)
{
if (ioctl(pInfo->fd, EVIOCGRAB, (void *)1)) {
xf86Msg(X_ERROR, "Grab failed. Device already configured?\n");
return 1;
} else if (pEvdev->grabDevice && ioctl(pInfo->fd, EVIOCGRAB, (void *)0)) {
xf86Msg(X_WARNING, "%s: Release failed (%s)\n", pInfo->name,
strerror(errno));
} else if (ioctl(pInfo->fd, EVIOCGRAB, (void *)0))
xf86Msg(X_WARNING, "%s: Release failed (%s)\n", pInfo->name,
strerror(errno));
}
/* Trinary state for ignoring axes: