Re: [PATCH] drm/i915: Tone done *ERROR* for an expected VBT condition

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On Fri, Jul 31, 2015 at 11:15:27AM +0100, Chris Wilson wrote:
> Older VBT (e.g. gen2) have smaller child block defintions, so do not cry
> wolf over an error that is outside of our control and is not an error
> anyway.
> 
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_bios.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index 2ff9eb00fdec..f8afbafa8e02 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -1023,7 +1023,7 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
>  		return;
>  	}
>  	if (p_defs->child_dev_size < sizeof(*p_child)) {

This line was added in

commit 90e4f1592bb6e82f6690f0e05a8aadcf04d7bce7
Author: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Date:   Wed Mar 25 18:45:58 2015 +0200

    drm/i915: Fix the VBT child device parsing for BSW

Since vbt is complete pain I started requiring that we match expected
sizes with vbt versions. Can some one please fix this?

Or we can just revert the old patch.
-Daniel

> -		DRM_ERROR("General definiton block child device size is too small.\n");
> +		DRM_DEBUG_KMS("General definiton block child device size is too small.\n");
>  		return;
>  	}
>  	/* get the block size of general definitions */
> -- 
> 2.5.0
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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