[Bug 93124] [BSW BAT IGT] pm_rpm doesn't support output restrictions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93124

--- Comment #2 from Daniel Vetter <daniel at ffwll.ch> ---
There is no dmesg, the problem is that the igt testcase skips:

IGT-Version: 1.12-ge10ba6b (x86_64) (Linux: 4.4.0-rc2-gfxbench+ x86_64)
Runtime PM support: 1
PC8 residency support: 0
Test requirement not met in function enable_one_screen, file pm_rpm.c:332:
Test requirement: enable_one_screen_with_type(data, SCREEN_TYPE_ANY)
Last errno: 22, Invalid argument
Subtest basic-rte: SKIP (2.489s)

The machine is bsw-nuc-2 (we only have 1 bsw in CI).

Afaik the issue is that this bsw machines only supports outputs that work on
pipe C (as can be seen that the crc-pipe tests skip for both A and B), but
pm_rpm only tries to light up pipe A. The fix is to teach pm_rpm to try any of
the crtc, if pipe A can't be light up).

So this is a bug in the test suite, not in the kernel.

Sorry for the inclarity.

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