Author: dumbbell
Date: Fri Mar 11 18:59:15 2016
New Revision: 296674
URL: https://svnweb.freebsd.org/changeset/base/296674
Log:
drm: Fix dev->ioctl_count references leak
This fixes the following error:
kernel: error: [drm:pid1167:drm_release] *ERROR* Device busy: 2
Because of that, drm_lastclose() was not called, leading to a few memory
leaks once the driver was unloaded.
MFC after: 1 week
Modified:
head/sys/dev/drm2/drm_drv.c
Modified: head/sys/dev/drm2/drm_drv.c
==============================================================================
--- head/sys/dev/drm2/drm_drv.c Fri Mar 11 17:39:54 2016 (r296673)
+++ head/sys/dev/drm2/drm_drv.c Fri Mar 11 18:59:15 2016 (r296674)
@@ -386,17 +386,21 @@ int drm_ioctl(struct cdev *kdev, u_long
switch (cmd) {
case FIONBIO:
case FIOASYNC:
+ atomic_dec(&dev->ioctl_count);
return 0;
case FIOSETOWN:
+ atomic_dec(&dev->ioctl_count);
return fsetown(*(int *)data, &file_priv->minor->buf_sigio);
case FIOGETOWN:
+ atomic_dec(&dev->ioctl_count);
*(int *) data = fgetown(&file_priv->minor->buf_sigio);
return 0;
}
if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
+ atomic_dec(&dev->ioctl_count);
DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
return EINVAL;
}
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