linux-kernel - Re: [PATCH v3] drm/i915: Honor SSC quirk table over the default, unless set by user

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Date:	Wed, 09 Nov 2011 17:30:29 +0100
From:	Michel Alexandre Salim <salimma@...oraproject.org>
To:	intel-gfx@...ts.freedesktop.org
CC:	Keith Packard <keithp@...thp.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] drm/i915: Honor SSC quirk table over the default,
 unless set by user

Additional note: while I've not touched the line since it does not
affect me, it seems that i915_panel_use_ssc *cannot* be less than 0
since that variable is declared as unsigned.

So the last line (the value in dev_priv) will never be used to determine
whether SSC is used anyway. Keith probably knows more since he
introduces that check in the commit that my patch referred to.

On 11/09/2011 05:12 PM, Michel Alexandre Salim wrote:
>  static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
>  {
> +	if (i915_panel_use_ssc == 1)
> +		return true;
> +	if (dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE)
> +		return false;
>  	if (i915_panel_use_ssc >= 0)
>  		return i915_panel_use_ssc != 0;
> -	return dev_priv->lvds_use_ssc
> -		&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
> +	return dev_priv->lvds_use_ssc;
>  }
>  
>  /**


-- 
Michel Alexandre Salim
µblog:      http://identi.ca/hircus
            http://twitter.com/hircus
GPG key ID: 78884778

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