drm/udl: Use devm_drm_dev_alloc

With Thomas' patch to clean up fbdev init this is a rather standard
conversion to the new wrapper macro.

v2: Rebase on top of Thomas' patches to remove the return value from
drm_fbdev_generic_setup()

v3: Update commit message to reflect the reality of the rebased patch
(Sam)

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200415074034.175360-12-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 9cc6d07..523f60e 100644 (file)
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -57,27 +57,20 @@ static struct udl_device *udl_driver_create(struct usb_interface *interface)
        struct udl_device *udl;
        int r;
 
-       udl = kzalloc(sizeof(*udl), GFP_KERNEL);
-       if (!udl)
-               return ERR_PTR(-ENOMEM);
-
-       r = drm_dev_init(&udl->drm, &driver, &interface->dev);
-       if (r) {
-               kfree(udl);
-               return ERR_PTR(r);
-       }
+       udl = devm_drm_dev_alloc(&interface->dev, &driver,
+                                struct udl_device, drm);
+       if (IS_ERR(udl))
+               return udl;
 
        udl->udev = udev;
        udl->drm.dev_private = udl;
-       drmm_add_final_kfree(&udl->drm, udl);
 
        r = udl_init(udl);
-       if (r) {
-               drm_dev_put(&udl->drm);
+       if (r)
                return ERR_PTR(r);
-       }
 
        usb_set_intfdata(interface, udl);
+
        return udl;
 }
 
@@ -93,17 +86,13 @@ static int udl_usb_probe(struct usb_interface *interface,
 
        r = drm_dev_register(&udl->drm, 0);
        if (r)
-               goto err_free;
+               return r;
 
        DRM_INFO("Initialized udl on minor %d\n", udl->drm.primary->index);
 
        drm_fbdev_generic_setup(&udl->drm, 0);
 
        return 0;
-
-err_free:
-       drm_dev_put(&udl->drm);
-       return r;
 }
 
 static void udl_usb_disconnect(struct usb_interface *interface)
@@ -113,7 +102,6 @@ static void udl_usb_disconnect(struct usb_interface *interface)
        drm_kms_helper_poll_fini(dev);
        udl_drop_usb(dev);
        drm_dev_unplug(dev);
-       drm_dev_put(dev);
 }
 
 /*