Alex Deucher 39dc9aabd8 drm/radeon/r5xx-r7xx: wait for the MC to settle after MC blackout ...

Some chips seem to need a little delay after blacking out
the MC before the requests actually stop. Stop DMAR errors
reported by Shuah Khan.

Reported-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2013-01-31 16:13:42 -05:00

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