drm/radeon/kms: avoid oops on mac r4xx cards
They don't have an atombios so don't attempt to use it for eng/mem clocks. Reported by spoonb on #radeon fixes: https://bugs.freedesktop.org/show_bug.cgi?id=28671 Signed-off-by:Alex Deucher <alexdeucher@gmail.com> Signed-off-by:
Dave Airlie <airlied@redhat.com>
parent
b26c9497
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