drm/radeon/kms: r600/r700 don't process IRQ if not initialized
In some rare case the wptr returned from the hw wasn't 0 and leaded to trick r600_process_irq that their were irq to process. Add a check to bail out if irq hasn't been initialized this will avoid oops provoqued by the rare wptr != 0 on initialization. Signed-off-by:Jerome Glisse <jglisse@redhat.com> Reviewed-by:
Alex Deucher <alexdeucher@gmail.com> Signed-off-by:
Dave Airlie <airlied@linux.ie>
parent
0c45249f
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