[PATCH 11/59] drm/udl: Use devm_drm_dev_alloc

[Thomas Zimmermann]

Am 15.04.20 um 09:39 schrieb Daniel Vetter:
> 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.
> 
> v2: Rebase on top of Thomas' patches to remove the return value from
> drm_fbdev_generic_setup()
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Noralf Trønnes <noralf at tronnes.org>
> Cc: Dave Airlie <airlied at redhat.com>
> Cc: Sean Paul <sean at poorly.run>
> Cc: Thomas Zimmermann <tzimmermann at suse.de>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Emil Velikov <emil.l.velikov at gmail.com>
> Cc: Sam Ravnborg <sam at ravnborg.org>
> Cc: Thomas Gleixner <tglx at linutronix.de>

Reviewed-by: Thomas Zimmermann <tzimmermann at suse.de>

> ---
>  drivers/gpu/drm/udl/udl_drv.c | 26 +++++++-------------------
>  1 file changed, 7 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
> index 9cc6d075cb40..523f60e02a85 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;
>  }
>  
> @@ -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);
>  }
>  
>  /*
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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