[PATCH 15/44] drm/udl: Use demv_drm_dev_alloc

[Daniel Vetter <daniel.vetter@xxxxxxxx>]

Also init the fbdev emulation before we register the device, that way
we can rely on the auto-cleanup and simplify the probe error code even
more.

Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxxx>
Cc: Sean Paul <sean@xxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Emil Velikov <emil.l.velikov@xxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 drivers/gpu/drm/udl/udl_drv.c | 36 +++++++++++------------------------
 1 file changed, 11 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 1ce2d865c36d..4ba5149fdd57 100644
--- 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;
 }
 
@@ -91,23 +84,17 @@ static int udl_usb_probe(struct usb_interface *interface,
 	if (IS_ERR(udl))
 		return PTR_ERR(udl);
 
+	r = drm_fbdev_generic_setup(&udl->drm, 0);
+	if (r)
+		return r;
+
 	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);
 
-	r = drm_fbdev_generic_setup(&udl->drm, 0);
-	if (r)
-		goto err_drm_dev_unregister;
-
 	return 0;
-
-err_drm_dev_unregister:
-	drm_dev_unregister(&udl->drm);
-err_free:
-	drm_dev_put(&udl->drm);
-	return r;
 }
 
 static void udl_usb_disconnect(struct usb_interface *interface)
@@ -117,7 +104,6 @@ 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);
 }
 
 /*
-- 
2.25.1

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