[Intel-gfx] [PATCH v3 2/2] drm/i915: Consolidate ring freespace

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  364/364              364/364
ILK              +1-9              365/366              357/366
SNB                                  450/450              450/450
IVB                                  498/498              498/498
BYT                                  289/289              289/289
HSW                                  564/564              564/564
BDW                                  417/417              417/417
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*ILK  igt_kms_flip_nonexisting-fb      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_pipe_crc_basic_bad-nb-words-3      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_render_direct-render      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_flip_bcs-flip-vs-modeset-interruptible      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_flip_busy-flip-interruptible      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_flip_flip-vs-dpms-interruptible      PASS(2, M26)      NSPT(1, M26)
*ILK  igt_kms_flip_flip-vs-panning      PASS(2, M26)      DMESG_WARN(1, M26)
*ILK  igt_kms_flip_rcs-flip-vs-modeset      NSPT(1, M26)PASS(1, M26)      DMESG_WARN(1, M26)
 ILK  igt_kms_flip_wf_vblank-ts-check      DMESG_WARN(1, M26)PASS(1, M26)      PASS(1, M26)
 ILK  igt_kms_flip_wf_vblank-vs-modeset-interruptible      DMESG_WARN(1, M26)PASS(1, M26)      DMESG_WARN(1, M26)
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