media: media-device: set driver_version directly

Don't use driver_version from struct media_device, just return
LINUX_VERSION_CODE as the other media subsystems do.

The driver_version field in struct media_device will be removed
in the following patches.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/media-device.c

@@ -71,7 +71,7 @@ static int media_device_get_info(struct media_device *dev,
 
 	info->media_version = MEDIA_API_VERSION;
 	info->hw_revision = dev->hw_revision;
-	info->driver_version = dev->driver_version;
+	info->driver_version = LINUX_VERSION_CODE;
 
 	return 0;
 }

include/media/media-device.h

@@ -249,11 +249,6 @@ void media_device_cleanup(struct media_device *mdev);
  *    driver-specific format. When possible the revision should be formatted
  *    with the KERNEL_VERSION() macro.
  *
- *  - &media_entity.driver_version is formatted with the KERNEL_VERSION()
- *    macro. The version minor must be incremented when new features are added
- *    to the userspace API without breaking binary compatibility. The version
- *    major must be incremented when binary compatibility is broken.
- *
  * .. note::
  *
  *    #) Upon successful registration a character device named media[0-9]+ is created. The device major and minor numbers are dynamic. The model name is exported as a sysfs attribute.