diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-20 08:42:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-20 08:42:48 -0700 |
| commit | 5cab3856e76f4e6dd44731cea054021105e3e02d (patch) | |
| tree | 0fce18d11071276dac994765ffc35248438edab2 /drivers/gpu/drm/drm_stub.c | |
| parent | 2edbdd1266784495979576c4ab4ef294c29bad27 (diff) | |
| parent | 59de2bebabc5027f93df999d59cc65df591c3e6e (diff) | |
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
agp: zero pages before sending to userspace
drm: check for minor master before allowing drop master.
drm: set/clear is_master when master changed
drm: clean dirty memory after device release
drm: count reaches -1
Diffstat (limited to 'drivers/gpu/drm/drm_stub.c')
| -rw-r--r-- | drivers/gpu/drm/drm_stub.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c index d009661781bc..ef878615c49f 100644 --- a/drivers/gpu/drm/drm_stub.c +++ b/drivers/gpu/drm/drm_stub.c @@ -159,6 +159,9 @@ void drm_master_put(struct drm_master **master) int drm_setmaster_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { + if (file_priv->is_master) + return 0; + if (file_priv->minor->master && file_priv->minor->master != file_priv->master) return -EINVAL; @@ -169,6 +172,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data, file_priv->minor->master != file_priv->master) { mutex_lock(&dev->struct_mutex); file_priv->minor->master = drm_master_get(file_priv->master); + file_priv->is_master = 1; mutex_unlock(&dev->struct_mutex); } @@ -178,10 +182,15 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data, int drm_dropmaster_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { - if (!file_priv->master) + if (!file_priv->is_master) return -EINVAL; + + if (!file_priv->minor->master) + return -EINVAL; + mutex_lock(&dev->struct_mutex); drm_master_put(&file_priv->minor->master); + file_priv->is_master = 0; mutex_unlock(&dev->struct_mutex); return 0; } |