With this we can drop the final kfree from the release function.

v2: We need drm_dev_put to unroll the driver creation (once
drm_dev_init and drmm_add_final_kfree suceeded), otherwise
the drmm_ magic doesn't happen.

v3: Actually squash in the fixup (Laurent).

Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Cc: Dave Airlie <airl...@redhat.com>
Cc: Sean Paul <s...@poorly.run>
Cc: Thomas Zimmermann <tzimmerm...@suse.de>
Cc: Emil Velikov <emil.l.veli...@gmail.com>
Cc: Daniel Vetter <daniel.vet...@ffwll.ch>
Cc: "Noralf Trønnes" <nor...@tronnes.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Sam Ravnborg <s...@ravnborg.org>
---
 drivers/gpu/drm/udl/udl_drv.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index e6c1cd77d4d4..6a5594946096 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -10,6 +10,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_file.h>
 #include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_managed.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_print.h>
@@ -38,7 +39,6 @@ static void udl_driver_release(struct drm_device *dev)
        udl_fini(dev);
        udl_modeset_cleanup(dev);
        drm_dev_fini(dev);
-       kfree(dev);
 }
 
 static struct drm_driver driver = {
@@ -77,11 +77,11 @@ static struct udl_device *udl_driver_create(struct 
usb_interface *interface)
 
        udl->udev = udev;
        udl->drm.dev_private = udl;
+       drmm_add_final_kfree(&udl->drm, udl);
 
        r = udl_init(udl);
        if (r) {
-               drm_dev_fini(&udl->drm);
-               kfree(udl);
+               drm_dev_put(&udl->drm);
                return ERR_PTR(r);
        }
 
-- 
2.24.1

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