The variable is_master is being used to track the drm_file that is currently
master, so its value needs to be updated accordingly when the master is
changed.
Signed-off-by: Jonas Bonn <jo...@southpole.se>
---
drivers/gpu/drm/drm_stub.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index d009661..1b3e0ff 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 +182,12 @@ 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;
+
mutex_lock(&dev->struct_mutex);
drm_master_put(&file_priv->minor->master);
+ file_priv->is_master = 0;
mutex_unlock(&dev->struct_mutex);
return 0;
}
--
1.6.0.4
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