[PATCH 3/3] drm/radeon/kms: fix dac detect stealing in-use encoder.

[Alex Deucher]

On Tue, Jun 14, 2011 at 2:13 AM, Dave Airlie <airlied at gmail.com> wrote:
> From: Dave Airlie <airlied at linux.ie>
>
> On my RS690 the VGA and TV-out share the same DAC, so when xrandr
> is called, tv-out steals the encoder and tries to load detect on it,
> however this causes flicker on the VGA.
>
> This blocks this by testing if the encoder is connected to anything
> and if so whether its connected to the probing connector.

Could we get into a case where we fail to run load detect on both
connectors due to this check?

Alex