Re: [PATCH 2/3] drm/i915/display: Add helper func to get intel_fbdev from drm_fb_helper

[Andrzej Hajda <andrzej.hajda@xxxxxxxxx>]

On 20.03.2023 11:09, Nirmoy Das wrote:
> Add a helper function to retrieve struct intel_fbdev from
> struct drm_fb_helper.
>
> Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
> Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Cc: Imre Deak <imre.deak@xxxxxxxxx>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>

Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>

Regards
Andrzej

> ---
>   drivers/gpu/drm/i915/display/intel_fbdev.c | 23 ++++++++++------------
>   1 file changed, 10 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
> index 673bcdfb7ff6..8c3b3c3fd0e0 100644
> --- a/drivers/gpu/drm/i915/display/intel_fbdev.c
> +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
> @@ -67,6 +67,11 @@ struct intel_fbdev {
>   	struct mutex hpd_lock;
>   };
>   
> +static struct intel_fbdev *to_intel_fbdev(struct drm_fb_helper *fb_helper)
> +{
> +	return container_of(fb_helper, struct intel_fbdev, helper);
> +}
> +
>   static struct intel_frontbuffer *to_frontbuffer(struct intel_fbdev *ifbdev)
>   {
>   	return ifbdev->fb->frontbuffer;
> @@ -79,9 +84,7 @@ static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev)
>   
>   static int intel_fbdev_set_par(struct fb_info *info)
>   {
> -	struct drm_fb_helper *fb_helper = info->par;
> -	struct intel_fbdev *ifbdev =
> -		container_of(fb_helper, struct intel_fbdev, helper);
> +	struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
>   	int ret;
>   
>   	ret = drm_fb_helper_set_par(info);
> @@ -93,9 +96,7 @@ static int intel_fbdev_set_par(struct fb_info *info)
>   
>   static int intel_fbdev_blank(int blank, struct fb_info *info)
>   {
> -	struct drm_fb_helper *fb_helper = info->par;
> -	struct intel_fbdev *ifbdev =
> -		container_of(fb_helper, struct intel_fbdev, helper);
> +	struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
>   	int ret;
>   
>   	ret = drm_fb_helper_blank(blank, info);
> @@ -108,9 +109,7 @@ static int intel_fbdev_blank(int blank, struct fb_info *info)
>   static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
>   				   struct fb_info *info)
>   {
> -	struct drm_fb_helper *fb_helper = info->par;
> -	struct intel_fbdev *ifbdev =
> -		container_of(fb_helper, struct intel_fbdev, helper);
> +	struct intel_fbdev *ifbdev = to_intel_fbdev(info->par);
>   	int ret;
>   
>   	ret = drm_fb_helper_pan_display(var, info);
> @@ -136,8 +135,7 @@ static const struct fb_ops intelfb_ops = {
>   static int intelfb_alloc(struct drm_fb_helper *helper,
>   			 struct drm_fb_helper_surface_size *sizes)
>   {
> -	struct intel_fbdev *ifbdev =
> -		container_of(helper, struct intel_fbdev, helper);
> +	struct intel_fbdev *ifbdev = to_intel_fbdev(helper);
>   	struct drm_framebuffer *fb;
>   	struct drm_device *dev = helper->dev;
>   	struct drm_i915_private *dev_priv = to_i915(dev);
> @@ -193,8 +191,7 @@ static int intelfb_alloc(struct drm_fb_helper *helper,
>   static int intelfb_create(struct drm_fb_helper *helper,
>   			  struct drm_fb_helper_surface_size *sizes)
>   {
> -	struct intel_fbdev *ifbdev =
> -		container_of(helper, struct intel_fbdev, helper);
> +	struct intel_fbdev *ifbdev = to_intel_fbdev(helper);
>   	struct intel_framebuffer *intel_fb = ifbdev->fb;
>   	struct drm_device *dev = helper->dev;
>   	struct drm_i915_private *dev_priv = to_i915(dev);