[PATCH] drm/radeon: fix race between GPU reset and TTM delayed delete thread.

From: Dave Airlie My evergreen has been in a remote PC for week and reset has never once saved me from certain doom, I finally relocated to the box with a serial cable and noticed an oops when the GPU resets, and the TTM delayed delete thread tries to remove something from the GTT. This stops th

[PATCH] drm/radeon: fix race between GPU reset and TTM delayed delete thread.

From: Dave Airlie My evergreen has been in a remote PC for week and reset has never once saved me from certain doom, I finally relocated to the box with a serial cable and noticed an oops when the GPU resets, and the TTM delayed delete thread tries to remove something from the GTT. This stops th