Re: [PATCH v3 08/12] drm/edid: constify struct detailed_timing in parsing callbacks

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On Mon, Mar 28, 2022 at 05:34:29PM +0300, Jani Nikula wrote:
> Moving one level higher, constify struct detailed_timing pointers in
> callbacks.
> 
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>

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

> ---
>  drivers/gpu/drm/drm_edid.c | 40 ++++++++++++++++++++------------------
>  1 file changed, 21 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 6d1461991ba4..47234cf211ca 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -2349,7 +2349,7 @@ static bool is_detailed_timing_descriptor(const struct detailed_timing *descript
>  	return descriptor->pixel_clock != 0;
>  }
>  
> -typedef void detailed_cb(struct detailed_timing *timing, void *closure);
> +typedef void detailed_cb(const struct detailed_timing *timing, void *closure);
>  
>  static void
>  cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)
> @@ -2408,7 +2408,7 @@ drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)
>  }
>  
>  static void
> -is_rb(struct detailed_timing *descriptor, void *data)
> +is_rb(const struct detailed_timing *descriptor, void *data)
>  {
>  	bool *res = data;
>  
> @@ -2438,9 +2438,9 @@ drm_monitor_supports_rb(struct edid *edid)
>  }
>  
>  static void
> -find_gtf2(struct detailed_timing *descriptor, void *data)
> +find_gtf2(const struct detailed_timing *descriptor, void *data)
>  {
> -	struct detailed_timing **res = data;
> +	const struct detailed_timing **res = data;
>  
>  	if (!is_display_descriptor(descriptor, EDID_DETAIL_MONITOR_RANGE))
>  		return;
> @@ -2455,7 +2455,7 @@ find_gtf2(struct detailed_timing *descriptor, void *data)
>  static int
>  drm_gtf2_hbreak(struct edid *edid)
>  {
> -	struct detailed_timing *descriptor = NULL;
> +	const struct detailed_timing *descriptor = NULL;
>  
>  	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &descriptor);
>  
> @@ -2467,7 +2467,7 @@ drm_gtf2_hbreak(struct edid *edid)
>  static int
>  drm_gtf2_2c(struct edid *edid)
>  {
> -	struct detailed_timing *descriptor = NULL;
> +	const struct detailed_timing *descriptor = NULL;
>  
>  	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &descriptor);
>  
> @@ -2479,7 +2479,7 @@ drm_gtf2_2c(struct edid *edid)
>  static int
>  drm_gtf2_m(struct edid *edid)
>  {
> -	struct detailed_timing *descriptor = NULL;
> +	const struct detailed_timing *descriptor = NULL;
>  
>  	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &descriptor);
>  
> @@ -2491,7 +2491,7 @@ drm_gtf2_m(struct edid *edid)
>  static int
>  drm_gtf2_k(struct edid *edid)
>  {
> -	struct detailed_timing *descriptor = NULL;
> +	const struct detailed_timing *descriptor = NULL;
>  
>  	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &descriptor);
>  
> @@ -2503,7 +2503,7 @@ drm_gtf2_k(struct edid *edid)
>  static int
>  drm_gtf2_2j(struct edid *edid)
>  {
> -	struct detailed_timing *descriptor = NULL;
> +	const struct detailed_timing *descriptor = NULL;
>  
>  	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &descriptor);
>  
> @@ -3009,7 +3009,7 @@ drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
>  }
>  
>  static void
> -do_inferred_modes(struct detailed_timing *timing, void *c)
> +do_inferred_modes(const struct detailed_timing *timing, void *c)
>  {
>  	struct detailed_mode_closure *closure = c;
>  	const struct detailed_non_pixel *data = &timing->data.other_data;
> @@ -3091,7 +3091,7 @@ drm_est3_modes(struct drm_connector *connector, const struct detailed_timing *ti
>  }
>  
>  static void
> -do_established_modes(struct detailed_timing *timing, void *c)
> +do_established_modes(const struct detailed_timing *timing, void *c)
>  {
>  	struct detailed_mode_closure *closure = c;
>  
> @@ -3142,7 +3142,7 @@ add_established_modes(struct drm_connector *connector, struct edid *edid)
>  }
>  
>  static void
> -do_standard_modes(struct detailed_timing *timing, void *c)
> +do_standard_modes(const struct detailed_timing *timing, void *c)
>  {
>  	struct detailed_mode_closure *closure = c;
>  	const struct detailed_non_pixel *data = &timing->data.other_data;
> @@ -3255,7 +3255,7 @@ static int drm_cvt_modes(struct drm_connector *connector,
>  }
>  
>  static void
> -do_cvt_mode(struct detailed_timing *timing, void *c)
> +do_cvt_mode(const struct detailed_timing *timing, void *c)
>  {
>  	struct detailed_mode_closure *closure = c;
>  
> @@ -3284,7 +3284,7 @@ add_cvt_modes(struct drm_connector *connector, struct edid *edid)
>  static void fixup_detailed_cea_mode_clock(struct drm_display_mode *mode);
>  
>  static void
> -do_detailed_mode(struct detailed_timing *timing, void *c)
> +do_detailed_mode(const struct detailed_timing *timing, void *c)
>  {
>  	struct detailed_mode_closure *closure = c;
>  	struct drm_display_mode *newmode;
> @@ -4517,17 +4517,19 @@ drm_parse_hdmi_vsdb_audio(struct drm_connector *connector, const u8 *db)
>  }
>  
>  static void
> -monitor_name(struct detailed_timing *t, void *data)
> +monitor_name(const struct detailed_timing *timing, void *data)
>  {
> -	if (!is_display_descriptor(t, EDID_DETAIL_MONITOR_NAME))
> +	const char **res = data;
> +
> +	if (!is_display_descriptor(timing, EDID_DETAIL_MONITOR_NAME))
>  		return;
>  
> -	*(u8 **)data = t->data.other_data.data.str.str;
> +	*res = timing->data.other_data.data.str.str;
>  }
>  
>  static int get_monitor_name(struct edid *edid, char name[13])
>  {
> -	char *edid_name = NULL;
> +	const char *edid_name = NULL;
>  	int mnl;
>  
>  	if (!edid || !name)
> @@ -5247,7 +5249,7 @@ static void drm_parse_cea_ext(struct drm_connector *connector,
>  }
>  
>  static
> -void get_monitor_range(struct detailed_timing *timing,
> +void get_monitor_range(const struct detailed_timing *timing,
>  		       void *info_monitor_range)
>  {
>  	struct drm_monitor_range_info *monitor_range = info_monitor_range;
> -- 
> 2.30.2

-- 
Ville Syrjälä
Intel



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