https://bugzilla.kernel.org/show_bug.cgi?id=52491
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #4 from Alex Deucher alexdeucher@gmail.com 2013-01-12 22:27:22 --- Probably a bad bisect. That commit just enables userspace accel drivers to utilize the DMA engine, but the userspace drivers do not take advantage of that yet so the code is currently never called.