[PATCH 3.11 012/138] drm/radeon: use pflip irq on R600+ v2

3.11.10.11 -stable review patch. If anyone has any objections, please let me know. -- From: =?UTF-8?q?Christian=20K=C3=B6nig?= commit f5d636d2a74b755879feec35e14a259de52ccc07 upstream. Testing the update pending bit directly after issuing an update is nonsense cause

[PATCH 3.11 012/138] drm/radeon: use pflip irq on R600+ v2

3.11.10.11 -stable review patch. If anyone has any objections, please let me know. -- From: =?UTF-8?q?Christian=20K=C3=B6nig?= christian.koe...@amd.com commit f5d636d2a74b755879feec35e14a259de52ccc07 upstream. Testing the update pending bit directly after issuing an update is