dm_test_shou...oled_no_cacp(9)

📦 version 7.3.1, in nixpkgs unstable

✨ dm_test_shou...oled_no_cacp(9) — like, the Kernel API Manual, but make it make sense 💅

okay so bestie, buckle up, because this is a page from the Kernel API Manual and the star of the show is dm_test_shou...oled_no_cacp(9) — yes that name is truncated, yes it's iconic, no we're not fixing it. 🎀

💖 NAME 💖

dm_test_should_create_sysfs_oled_no_cacp — a test that checks an OLED panel without CACP support doesn't get a sysfs backlight interface. Literally it's testing that sysfs stays disabled. No sysfs for you, bestie. 🚫✨

🦋 SYNOPSIS 🦋

void dm_test_should_create_sysfs_oled_no_cacp (struct kunit *test );

🌸 ARGUMENTS 🌸

  • test — the KUnit test context, a.k.a. the whole entire vibe of this one specific test. Hand it over and let it cook. 🫶

🎀 DESCRIPTION 🎀

so here's the tea ☕ — if you've got a non-LCD panel that does not support CACP, then it must not expose the sysfs backlight interface. That's it. That's the whole test. It's giving "boundary check, but make it a KUnit test." 🌈

Like, no CACP means no sysfs backlight, periodt. This test is the vibe check that confirms it. 👑

👑 SEE ALSO 👑

okay this list is long — lowkey a whole friend group — but every single one of them matters, so here we go, no skips, no cuts: 💜

bestie there is literally no exit status, no signals, no env vars, no bugs section on this one — it's just a chill little KUnit test doing its one job. don't go looking for drama that isn't there. 🙈

and that's the page!! this gem comes to you from ./drivers/gpu/drm/amd/display/..., dated October 2026, living that dm_test_shou...oled_no_cacp(9) life. go forth and test your OLEDs, queen. 🧚🔥

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