Alex Deucher 2a7d44f47f drm/radeon/dpm: don't add pwm attributes if DPM is disabled
PWM fan control is only available with DPM.  If DPM disabled,
don't expose the PWM fan controls to avoid a crash.

Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=92524

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-10-19 15:45:54 -04:00
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