diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 6efdba4993fc..2ad617ed8709 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -313,9 +313,10 @@ void drm_minor_release(struct drm_minor *minor) * callbacks implemented by the driver. The driver then needs to initialize all * the various subsystems for the drm device like memory management, vblank * handling, modesetting support and intial output configuration plus obviously - * initialize all the corresponding hardware bits. Finally when everything is up - * and running and ready for userspace the device instance can be published - * using drm_dev_register(). + * initialize all the corresponding hardware bits. An important part of this is + * also calling drm_dev_set_unique() to set the userspace-visible unique name of + * this device instance. Finally when everything is up and running and ready for + * userspace the device instance can be published using drm_dev_register(). * * There is also deprecated support for initalizing device instances using * bus-specific helpers and the ->load() callback. But due to @@ -337,17 +338,6 @@ void drm_minor_release(struct drm_minor *minor) * dev_priv field of &drm_device. */ -static int drm_dev_set_unique(struct drm_device *dev, const char *name) -{ - if (!name) - return -EINVAL; - - kfree(dev->unique); - dev->unique = kstrdup(name, GFP_KERNEL); - - return dev->unique ? 0 : -ENOMEM; -} - /** * drm_put_dev - Unregister and release a DRM device * @dev: DRM device @@ -764,6 +754,26 @@ void drm_dev_unregister(struct drm_device *dev) } EXPORT_SYMBOL(drm_dev_unregister); +/** + * drm_dev_set_unique - Set the unique name of a DRM device + * @dev: device of which to set the unique name + * @name: unique name + * + * Sets the unique name of a DRM device using the specified string. Drivers + * can use this at driver probe time if the unique name of the devices they + * drive is static. + * + * Return: 0 on success or a negative error code on failure. + */ +int drm_dev_set_unique(struct drm_device *dev, const char *name) +{ + kfree(dev->unique); + dev->unique = kstrdup(name, GFP_KERNEL); + + return dev->unique ? 0 : -ENOMEM; +} +EXPORT_SYMBOL(drm_dev_set_unique); + /* * DRM Core * The DRM core module initializes all global DRM objects and makes them |