Re: [RESEND PATCH v2] drm/mxsfb: Remove generic DRM drivers in probe function

[Thomas Zimmermann <tzimmermann@suse.de>]

Am 05.12.24 um 17:24 schrieb Dario Binacchi:
> Use aperture helpers to remove all generic graphics drivers before
> loading mxsfb. Makes mxsfb compatible with simpledrm.
>
> Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

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

>
> ---
>
> Changes in v2:
> - Use aperture_remove_all_conflicting_devices() instead of
>    drm_aperture_remove_framebuffers().
>
>   drivers/gpu/drm/mxsfb/mxsfb_drv.c | 10 ++++++++++
>   1 file changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> index 6b95e4eb3e4e..10da8b54f4c6 100644
> --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> @@ -8,6 +8,7 @@
>    * Copyright (C) 2008 Embedded Alley Solutions, Inc All Rights Reserved.
>    */
>   
> +#include <linux/aperture.h>
>   #include <linux/clk.h>
>   #include <linux/dma-mapping.h>
>   #include <linux/io.h>
> @@ -362,6 +363,15 @@ static int mxsfb_probe(struct platform_device *pdev)
>   	if (ret)
>   		goto err_free;
>   
> +	/*
> +	 * Remove early framebuffers (ie. simplefb). The framebuffer can be
> +	 * located anywhere in RAM
> +	 */
> +	ret = aperture_remove_all_conflicting_devices(mxsfb_driver.name);
> +	if (ret)
> +		return dev_err_probe(&pdev->dev, ret,
> +				     "can't kick out existing framebuffers\n");
> +
>   	ret = drm_dev_register(drm, 0);
>   	if (ret)
>   		goto err_unload;

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)