[igt-dev] ✓ Fi.CI.BAT: success for lib/pm_rpm: Reload the module with full mmio debugging (rev2)

[Chris Wilson]

Quoting Patchwork (2018-09-04 12:01:51)
> == Series Details ==
> 
> Series: lib/pm_rpm: Reload the module with full mmio debugging (rev2)
> URL   : https://patchwork.freedesktop.org/series/48390/
> State : success
> 
> == Summary ==
> 
> = CI Bug Log - changes from CI_DRM_4763 -> IGTPW_1782 =
> 
> == Summary - SUCCESS ==
> 
>   No regressions found.
> 
>   External URL: https://patchwork.freedesktop.org/api/1.0/series/48390/revisions/2/mbox/
> 
> == Known issues ==
> 
>   Here are the changes found in IGTPW_1782 that come from known issues:
> 
>   === IGT changes ===
> 
>     ==== Issues hit ====
> 
>     igt at kms_frontbuffer_tracking@basic:
>       fi-byt-clapper:     PASS -> FAIL (fdo#103167)
> 
>     igt at kms_psr@primary_page_flip:
>       fi-cnl-psr:         PASS -> FAIL (fdo#107336)
> 
>     
>     ==== Possible fixes ====
> 
>     igt at kms_pipe_crc_basic@hang-read-crc-pipe-b:
>       fi-skl-guc:         FAIL (fdo#103191) -> PASS
> 
>     igt at kms_pipe_crc_basic@read-crc-pipe-b-frame-sequence:
>       fi-byt-clapper:     FAIL (fdo#107362, fdo#103191) -> PASS
> 
>     igt at pm_rpm@module-reload:
>       fi-bsw-kefka:       DMESG-WARN (fdo#107704) -> PASS
>       fi-glk-dsi:         WARN (fdo#107708, fdo#107602) -> PASS
>       fi-byt-clapper:     WARN (fdo#107708, fdo#107602) -> PASS
>       fi-bsw-n3050:       DMESG-WARN (fdo#107704) -> PASS
>       fi-kbl-x1275:       WARN (fdo#107708, fdo#107602) -> PASS
>       fi-cnl-psr:         WARN (fdo#107708, fdo#107602) -> PASS
>       fi-byt-j1900:       DMESG-WARN (fdo#107704) -> PASS
>       fi-byt-n2820:       DMESG-WARN (fdo#107704) -> PASS

Hmm. I think this means that the unclaimed mmio is outside of our
driver. The warnings in stock are generated by
intel_uncore_arm_unclaimed_mmio_detection() at driver unload time, but
we shortcircuit that function if mmio debugging is already enabled.
Since the debug is already enabled and didn't catch anything, it is not
one of our regular register accesses.

Annoying, but ignorance is bliss.
-Chris