Re: [PATCH] drm/bridge: nwl-dsi: switch to devm_drm_of_get_bridge

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Hi,

On Mon, 2022-02-28 at 19:22 +0100, José Expósito wrote:
> The function "drm_of_find_panel_or_bridge" has been deprecated in
> favor of "devm_drm_of_get_bridge".
> 
> Switch to the new function and reduce boilerplate.
> 
> Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>

This doesn't apply to the latest drm-misc-next due to conflict with
commit 7b1534188c25 ("drm: bridge: nwl-dsi: Drop panel_bridge from
nwl_dsi").

> ---
>  drivers/gpu/drm/bridge/nwl-dsi.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
> index af07eeb47ca0..df3be9dd24fb 100644
> --- a/drivers/gpu/drm/bridge/nwl-dsi.c
> +++ b/drivers/gpu/drm/bridge/nwl-dsi.c
> @@ -909,19 +909,12 @@ static int nwl_dsi_bridge_attach(struct drm_bridge *bridge,
>  {
>  	struct nwl_dsi *dsi = bridge_to_dsi(bridge);
>  	struct drm_bridge *panel_bridge;
> -	struct drm_panel *panel;
> -	int ret;
>  
> -	ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 1, 0, &panel,
> -					  &panel_bridge);
> -	if (ret)
> -		return ret;
> +	panel_bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node,
> +					      1, 0);
> +	if (IS_ERR(panel_bridge))
> +		return PTR_ERR(panel_bridge);

Now that panel_bridge is resource managed, why not remove
drm_of_panel_bridge_remove() and its caller nwl_dsi_bridge_detach()?

Regards,
Liu Ying

>  
> -	if (panel) {
> -		panel_bridge = drm_panel_bridge_add(panel);
> -		if (IS_ERR(panel_bridge))
> -			return PTR_ERR(panel_bridge);
> -	}
>  	dsi->panel_bridge = panel_bridge;
>  
>  	if (!dsi->panel_bridge)




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