[PATCH] drm/vc4: call ->post_disable() functions in vc4_dsi_encoder_disable()

[Boris Brezillon]

On Fri, 26 Jun 2020 13:34:01 +0300
Dan Carpenter <dan.carpenter at oracle.com> wrote:

> The problem is that the iterator is already at the list head so the
> list_for_each_entry_from() loop is a no-op and we don't call the
> the iter->funcs->post_disable() functions.  This should be
> list_for_each_entry() instead.
> 
> Fixes: 033bfe7538a1 ("drm/vc4: dsi: Fix bridge chain handling")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

Reviewed-by: Boris Brezillon <boris.brezillon at collabora.com>

> ---
>  drivers/gpu/drm/vc4/vc4_dsi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
> index eaf276978ee7..f92d0e92fa72 100644
> --- a/drivers/gpu/drm/vc4/vc4_dsi.c
> +++ b/drivers/gpu/drm/vc4/vc4_dsi.c
> @@ -754,7 +754,7 @@ static void vc4_dsi_encoder_disable(struct drm_encoder *encoder)
>  
>  	vc4_dsi_ulps(dsi, true);
>  
> -	list_for_each_entry_from(iter, &dsi->bridge_chain, chain_node) {
> +	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
>  		if (iter->funcs->post_disable)
>  			iter->funcs->post_disable(iter);
>  	}