Commit 6a98a6e4 authored by Brandon Pollack's avatar Brandon Pollack Committed by Sean Paul
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Documentation: vkms: clarify devres managed reference cleanup 



added documentation to drm_dev_unregister clarifying that devres managed
devices allocated with devm_drm_dev_alloc do not require calls to
drm_dev_put.

Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarBrandon Pollack <brpol@chromium.org>
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230425080240.3582324-1-brpol@chromium.org
parent 04408952

drivers/gpu/drm/drm_drv.c

+3 −1
Original line number Diff line number Diff line
@@ -969,7 +969,9 @@ EXPORT_SYMBOL(drm_dev_register); 
 *

 * Unregister the DRM device from the system. This does the reverse of

 * drm_dev_register() but does not deallocate the device. The caller must call

 * drm_dev_put() to drop their final reference.

 * drm_dev_put() to drop their final reference, unless it is managed with devres

 * (as devices allocated with devm_drm_dev_alloc() are), in which case there is

 * already an unwind action registered.

 *

 * A special form of unregistering for hotpluggable devices is drm_dev_unplug(),

 * which can be called while there are still open users of @dev.