Hi Sumit, sending this once more with all the patches in once set, cause the last one turned out to be a bit chaotic because I send from the wrong branch.
The following patch set fixes the handling in the fence and reservation object wait function when the timeout is zero. An AMD developer introduced this a while ago to work around some issues in TTM and our amdgpu driver, but essentially this effort was a bit flawed because even with a zero timeout enable_signalling() should be called. Otherwise someone busy waiting for the fence might never be signaled when you have hardware with faulty interrupts for example. Please review and/or comment, Christian.
