On Thu, Feb 27, 2020 at 07:14:37PM +0100, Daniel Vetter wrote:
> 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.vetter@xxxxxxxxx>
> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Cc: Dave Airlie <airlied@xxxxxxxxxx>
> Cc: Sean Paul <sean@xxxxxxxxxx>
> Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
> Cc: Emil Velikov <emil.l.velikov@xxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: "Noralf Trønnes" <noralf@xxxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> ---
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> 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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