igt@kms_frontbuffer_tracking@fbc-suspend - incomplete - PM: suspend entry (deep)

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_6463/shard-snb4/igt@kms_frontbuffer_tracking@fbc-suspend.html

<6> [274.592421] [IGT] kms_frontbuffer_tracking: starting subtest fbc-suspend
<7> [274.593083] [drm:drm_mode_addfb2] [FB:78]
<7> [274.593170] [drm:drm_mode_addfb2] [FB:79]
<7> [274.593290] [drm:drm_mode_addfb2] [FB:80]
<7> [274.593406] [drm:drm_mode_addfb2] [FB:81]
<7> [274.593524] [drm:drm_mode_addfb2] [FB:82]
<7> [274.593734] [drm:drm_mode_addfb2] [FB:83]
<7> [274.609801] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, limit: 1
<7> [274.609925] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] Enabling FBC on pipe A
<7> [274.626345] i915 0000:00:02.0: [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
<7> [274.626628] [drm:drm_mode_setcrtc] [CRTC:45:pipe A]
<7> [274.626660] [drm:drm_mode_setcrtc] [CONNECTOR:61:VGA-1]
<7> [274.627611] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, limit: 1
<7> [274.627753] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] Enabling FBC on pipe A
<7> [274.643062] i915 0000:00:02.0: [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
<7> [274.644250] [drm:drm_mode_setcrtc] [CRTC:60:pipe B]
<7> [274.645400] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [274.645759] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [274.726989] i915 0000:00:02.0: [drm:drm_mode_rmfb_work_fn] Removing [FB:83] from all active usage due to RMFB ioctl
<7> [274.727057] i915 0000:00:02.0: [drm:atomic_remove_fb] Disabling [PLANE:31:primary A] because [FB:83] is removed
<7> [274.760277] [drm:drm_mode_setcrtc] [CRTC:45:pipe A]
<7> [274.760306] [drm:drm_mode_setcrtc] [CONNECTOR:61:VGA-1]
<7> [274.776816] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, limit: 1
<7> [274.776971] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] Enabling FBC on pipe A
<7> [274.794750] [drm:drm_mode_setcrtc] [CRTC:60:pipe B]
<7> [274.796067] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [274.802971] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<7> [274.878132] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<6> [275.063183] PM: suspend entry (deep)
<6> [275.064950] Filesystems sync: 0.001 seconds