File open/set_maseter ioctl and file close/drop_master ioctl share the
same master handling code. Extract it.
Note that vmwgfx's master_set callback needs to know whether the
master is a new one or has been used already, so thread this through.
On the close/drop side a similar parameter existed, but wasnt used.
Drop it to simplify the flow.
v2: Try to make it not leak so much (Emil).
v3: Send out the right version ...
Cc: Emil Velikov <emil.l.velikov@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Emil Velikov <emil.l.velikov@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_auth.c | 80 +++++++++++++++++++------------------
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 3 +-
include/drm/drmP.h | 3 +-
3 files changed, 44 insertions(+), 42 deletions(-)
diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
index 6bba6b9e9dcc..2794a4f3a105 100644
--- a/drivers/gpu/drm/drm_auth.c
+++ b/drivers/gpu/drm/drm_auth.c
@@ -110,6 +110,24 @@ static struct drm_master *drm_master_create(struct drm_device *dev)
return master;
}
+static int drm_set_master(struct drm_device *dev, struct drm_file *fpriv,
+ bool new_master)
+{
+ int ret = 0;
+
+ dev->master = drm_master_get(fpriv->master);
+ fpriv->is_master = 1;
+ if (dev->driver->master_set) {
+ ret = dev->driver->master_set(dev, fpriv, new_master);
+ if (unlikely(ret != 0)) {
+ fpriv->is_master = 0;
+ drm_master_put(&dev->master);
+ }
+ }
+
+ return ret;
+}
+
/*
* drm_new_set_master - Allocate a new master object and become master for the
* associated master realm.
@@ -127,37 +145,32 @@ static int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv)
lockdep_assert_held_once(&dev->master_mutex);
- /* create a new master */
- dev->master = drm_master_create(dev);
- if (!dev->master)
- return -ENOMEM;
-
- /* take another reference for the copy in the local file priv */
old_master = fpriv->master;
- fpriv->master = drm_master_get(dev->master);
+ fpriv->master = drm_master_create(dev);
+ if (!fpriv->master) {
+ fpriv->master = old_master;
+ return -ENOMEM;
+ }
if (dev->driver->master_create) {
ret = dev->driver->master_create(dev, fpriv->master);
if (ret)
goto out_err;
}
- if (dev->driver->master_set) {
- ret = dev->driver->master_set(dev, fpriv, true);
- if (ret)
- goto out_err;
- }
-
- fpriv->is_master = 1;
fpriv->allowed_master = 1;
fpriv->authenticated = 1;
+
+ ret = drm_set_master(dev, fpriv, true);
+ if (ret)
+ goto out_err;
+
if (old_master)
drm_master_put(&old_master);
return 0;
out_err:
- /* drop both references and restore old master on failure */
- drm_master_put(&dev->master);
+ /* drop references and restore old master on failure */
drm_master_put(&fpriv->master);
fpriv->master = old_master;
@@ -188,21 +201,21 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
goto out_unlock;
}
- dev->master = drm_master_get(file_priv->master);
- file_priv->is_master = 1;
- if (dev->driver->master_set) {
- ret = dev->driver->master_set(dev, file_priv, false);
- if (unlikely(ret != 0)) {
- file_priv->is_master = 0;
- drm_master_put(&dev->master);
- }
- }
-
+ ret = drm_set_master(dev, file_priv, false);
out_unlock:
mutex_unlock(&dev->master_mutex);
return ret;
}
+static void drm_drop_master(struct drm_device *dev,
+ struct drm_file *fpriv)
+{
+ if (dev->driver->master_drop)
+ dev->driver->master_drop(dev, fpriv);
+ drm_master_put(&dev->master);
+ fpriv->is_master = 0;
+}
+
int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@@ -216,11 +229,7 @@ int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
goto out_unlock;
ret = 0;
- if (dev->driver->master_drop)
- dev->driver->master_drop(dev, file_priv, false);
- drm_master_put(&dev->master);
- file_priv->is_master = 0;
-
+ drm_drop_master(dev, file_priv);
out_unlock:
mutex_unlock(&dev->master_mutex);
return ret;
@@ -271,17 +280,12 @@ void drm_master_release(struct drm_file *file_priv)
mutex_unlock(&dev->struct_mutex);
}
- if (dev->master == file_priv->master) {
- /* drop the reference held my the minor */
- if (dev->driver->master_drop)
- dev->driver->master_drop(dev, file_priv, true);
- drm_master_put(&dev->master);
- }
+ if (dev->master == file_priv->master)
+ drm_drop_master(dev, file_priv);
out:
/* drop the master reference held by the file priv */
if (file_priv->master)
drm_master_put(&file_priv->master);
- file_priv->is_master = 0;
mutex_unlock(&dev->master_mutex);
}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 9fcd8200d485..35eedc9d44fa 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1228,8 +1228,7 @@ static int vmw_master_set(struct drm_device *dev,
}
static void vmw_master_drop(struct drm_device *dev,
- struct drm_file *file_priv,
- bool from_release)
+ struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 179bdb228ecb..0f9046de0418 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -573,8 +573,7 @@ struct drm_driver {
int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
bool from_open);
- void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
- bool from_release);
+ void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv);
int (*debugfs_init)(struct drm_minor *minor);
void (*debugfs_cleanup)(struct drm_minor *minor);
--
2.8.1
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