Re: [RFC v1 4/6] drm/edid: use the new displayid iterator for detailed modes

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On Tue, Mar 09, 2021 at 03:54:12PM +0200, Jani Nikula wrote:
> Neatly reduce displayid boilerplate in code. No functional changes.
> 
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

> ---
>  drivers/gpu/drm/drm_edid.c | 23 ++++++-----------------
>  1 file changed, 6 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 58e61f792bc7..fbaa7d679cb2 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -5333,27 +5333,16 @@ static int add_displayid_detailed_1_modes(struct drm_connector *connector,
>  static int add_displayid_detailed_modes(struct drm_connector *connector,
>  					struct edid *edid)
>  {
> -	const u8 *displayid;
> -	int length, idx;
>  	const struct displayid_block *block;
> +	struct displayid_iter iter;
>  	int num_modes = 0;
> -	int ext_index = 0;
> -
> -	for (;;) {
> -		displayid = drm_find_displayid_extension(edid, &length, &idx,
> -							 &ext_index);
> -		if (!displayid)
> -			break;
>  
> -		idx += sizeof(struct displayid_hdr);
> -		for_each_displayid_db(displayid, block, idx, length) {
> -			switch (block->tag) {
> -			case DATA_BLOCK_TYPE_1_DETAILED_TIMING:
> -				num_modes += add_displayid_detailed_1_modes(connector, block);
> -				break;
> -			}
> -		}
> +	displayid_iter_edid_begin(edid, &iter);
> +	displayid_iter_for_each(block, &iter) {
> +		if (block->tag == DATA_BLOCK_TYPE_1_DETAILED_TIMING)
> +			num_modes += add_displayid_detailed_1_modes(connector, block);
>  	}
> +	displayid_iter_end(&iter);
>  
>  	return num_modes;
>  }
> -- 
> 2.20.1
> 
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-- 
Ville Syrjälä
Intel
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