The function always returns zero (success). Ideally we'll remove it all together - although that's requires a little more work.
For now, we can drop the return type and simplify the drm core code surrounding it.
v2: remove redundant assignment (Sam)
Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: VMware Graphics linux-graphics-maintainer@vmware.com Cc: Roland Scheidegger sroland@vmware.com Signed-off-by: Emil Velikov emil.l.velikov@gmail.com Cc: Sam Ravnborg sam@ravnborg.org Reviewed-by: Sam Ravnborg sam@ravnborg.org --- VMWare team, I'm planning to push this via drm-misc. Review, ack and comments are appreciated. --- drivers/gpu/drm/drm_auth.c | 32 +++++++---------------------- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 8 +++----- include/drm/drm_drv.h | 4 ++-- 3 files changed, 12 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c index 74ce0c29c960..4c723e3a689c 100644 --- a/drivers/gpu/drm/drm_auth.c +++ b/drivers/gpu/drm/drm_auth.c @@ -122,27 +122,19 @@ 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) +static void drm_set_master(struct drm_device *dev, struct drm_file *fpriv, + bool new_master) { - int ret = 0; - dev->master = drm_master_get(fpriv->master); - if (dev->driver->master_set) { - ret = dev->driver->master_set(dev, fpriv, new_master); - if (unlikely(ret != 0)) { - drm_master_put(&dev->master); - } - } + if (dev->driver->master_set) + dev->driver->master_set(dev, fpriv, new_master);
- fpriv->was_master = (ret == 0); - return ret; + fpriv->was_master = true; }
static int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv) { struct drm_master *old_master; - int ret;
lockdep_assert_held_once(&dev->master_mutex);
@@ -157,22 +149,12 @@ static int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv) fpriv->is_master = 1; fpriv->authenticated = 1;
- ret = drm_set_master(dev, fpriv, true); - if (ret) - goto out_err; + drm_set_master(dev, fpriv, true);
if (old_master) drm_master_put(&old_master);
return 0; - -out_err: - /* drop references and restore old master on failure */ - drm_master_put(&fpriv->master); - fpriv->master = old_master; - fpriv->is_master = 0; - - return ret; }
/* @@ -265,7 +247,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data, goto out_unlock; }
- ret = drm_set_master(dev, file_priv, false); + drm_set_master(dev, file_priv, false); out_unlock: mutex_unlock(&dev->master_mutex); return ret; diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index c2247a893ed4..470428387878 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -1129,9 +1129,9 @@ static long vmw_compat_ioctl(struct file *filp, unsigned int cmd, } #endif
-static int vmw_master_set(struct drm_device *dev, - struct drm_file *file_priv, - bool from_open) +static void vmw_master_set(struct drm_device *dev, + struct drm_file *file_priv, + bool from_open) { /* * Inform a new master that the layout may have changed while @@ -1139,8 +1139,6 @@ static int vmw_master_set(struct drm_device *dev, */ if (!from_open) drm_sysfs_hotplug_event(dev); - - return 0; }
static void vmw_master_drop(struct drm_device *dev, diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index bb924cddc09c..835c38a76ef6 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -311,8 +311,8 @@ struct drm_driver { * * Called whenever the minor master is set. Only used by vmwgfx. */ - int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, - bool from_open); + void (*master_set)(struct drm_device *dev, struct drm_file *file_priv, + bool from_open); /** * @master_drop: *