[PATCH] drm/connector: Set DDC pointer in drmm_connector_init

[Thomas Zimmermann]

Am 19.10.22 um 16:34 schrieb Maxime Ripard:
> Commit 35a3b82f1bdd ("drm/connector: Introduce drmm_connector_init")
> introduced the function drmm_connector_init() with a parameter for an
> optional ddc pointer to the i2c controller used to access the DDC bus.
> 
> However, the underlying call to __drm_connector_init() was always
> setting it to NULL instead of passing the ddc argument around.
> 
> This resulted in unexpected null pointer dereference on platforms
> expecting to get a DDC controller.
> 
> Fixes: 35a3b82f1bdd ("drm/connector: Introduce drmm_connector_init")
> Signed-off-by: Maxime Ripard <maxime at cerno.tech>

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

> ---
>   drivers/gpu/drm/drm_connector.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index e3142c8142b3..61c29ce74b03 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -435,7 +435,7 @@ int drmm_connector_init(struct drm_device *dev,
>   	if (drm_WARN_ON(dev, funcs && funcs->destroy))
>   		return -EINVAL;
>   
> -	ret = __drm_connector_init(dev, connector, funcs, connector_type, NULL);
> +	ret = __drm_connector_init(dev, connector, funcs, connector_type, ddc);
>   	if (ret)
>   		return ret;
>   

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