[Bug 82602] [SNB/BYT/BSW Regression]igt/kms_cursor_crc/cursor-256-sliding sporadically causes *ERROR* spurious interrupt

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82602

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[SNB/BYT/BSW                |[SNB/BYT/BSW
                   |Regression]igt/kms_cursor_c |Regression]igt/kms_cursor_c
                   |rc/cursor-256-sliding       |rc/cursor-256-sliding
                   |causes                      |sporadically causes *ERROR*
                   |"[drm:display_pipe_crc_irq_ |spurious interrupt
                   |handler] *ERROR* spurious   |
                   |interrupt"                  |

--- Comment #5 from lu hua <huax.lu at intel.com> ---
Run kms_cursor_crc on SNB, it also has this error.
IGT-Version: 1.8-ge622850 (x86_64) (Linux:
3.18.0-rc3_drm-intel-nightly_f56717_20141105+ x86_64)
Beginning cursor-128x128-sliding on pipe A, connector LVDS-1
................................................
cursor-128x128-sliding on pipe A, connector LVDS-1: PASSED

Beginning cursor-128x128-sliding on pipe B, connector LVDS-1
................................................
cursor-128x128-sliding on pipe B, connector LVDS-1: PASSED

Subtest cursor-128x128-sliding: SUCCESS (20.903s)
[root at x-hnr9 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[ 6485.566446] [drm:i9xx_pipe_crc_irq_handler [i915]] *ERROR* spurious
interrupt

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