[PATCH 3.16.y-ckt 121/185] drm/radeon: compute ring fix hibernation (CI GPU family) v2.

3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me know. -- From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= commit 161569deaa03cf3c00ed63352006193f250b0648 upstream. In order for hibernation to reliably work we need to cleanup more thoroughly the

[PATCH 3.16.y-ckt 121/185] drm/radeon: compute ring fix hibernation (CI GPU family) v2.

3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me know. -- From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= jgli...@redhat.com commit 161569deaa03cf3c00ed63352006193f250b0648 upstream. In order for hibernation to reliably work we need to cleanup more