Re: [Intel-gfx] [PATCH 17/37] drm/i915: Set fb->dev early on for inherited fbs

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On Fri, Nov 18, 2016 at 09:52:53PM +0200, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> We want the fbs inherited from the BIOS to be more or less fully working
> prior to actually registering them. This will allow us to just pass the
> fb to various helper function instead of having to pass all the
> different parameters separately.
> 
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

I guess eventually we'll grow a WARN_ON(!fb->dev) in
drm_framebuffer_init() to make sure these don't escape? Anyway:

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 12af936a402d..74a638c8de61 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -8704,6 +8704,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
>  
>  	fb = &intel_fb->base;
>  
> +	fb->dev = dev;
> +
>  	if (INTEL_GEN(dev_priv) >= 4) {
>  		if (val & DISPPLANE_TILED) {
>  			plane_config->tiling = I915_TILING_X;
> @@ -9734,6 +9736,8 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
>  
>  	fb = &intel_fb->base;
>  
> +	fb->dev = dev;
> +
>  	val = I915_READ(PLANE_CTL(pipe, 0));
>  	if (!(val & PLANE_CTL_ENABLE))
>  		goto error;
> @@ -9846,6 +9850,8 @@ ironlake_get_initial_plane_config(struct intel_crtc *crtc,
>  
>  	fb = &intel_fb->base;
>  
> +	fb->dev = dev;
> +
>  	if (INTEL_GEN(dev_priv) >= 4) {
>  		if (val & DISPPLANE_TILED) {
>  			plane_config->tiling = I915_TILING_X;
> -- 
> 2.7.4
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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