diff options
Diffstat (limited to 'include/drm/drm_drv.h')
| -rw-r--r-- | include/drm/drm_drv.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 505c91354802..71bbaaec836d 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -30,7 +30,8 @@ #include <linux/list.h> #include <linux/irqreturn.h> -struct drm_device; +#include <drm/drm_device.h> + struct drm_file; struct drm_gem_object; struct drm_master; @@ -613,7 +614,24 @@ void drm_dev_unregister(struct drm_device *dev); void drm_dev_ref(struct drm_device *dev); void drm_dev_unref(struct drm_device *dev); void drm_put_dev(struct drm_device *dev); -void drm_unplug_dev(struct drm_device *dev); +void drm_dev_unplug(struct drm_device *dev); + +/** + * drm_dev_is_unplugged - is a DRM device unplugged + * @dev: DRM device + * + * This function can be called to check whether a hotpluggable is unplugged. + * Unplugging itself is singalled through drm_dev_unplug(). If a device is + * unplugged, these two functions guarantee that any store before calling + * drm_dev_unplug() is visible to callers of this function after it completes + */ +static inline int drm_dev_is_unplugged(struct drm_device *dev) +{ + int ret = atomic_read(&dev->unplugged); + smp_rmb(); + return ret; +} + int drm_dev_set_unique(struct drm_device *dev, const char *name); |