dm_test_bri...zero_signals(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_bri...zero_signals — Kernel API Manual ✨

okay so bestie, buckle in, because we're looking at dm_test_bri...zero_signals(9) from the Kernel API Manual and honestly? it's giving "tiny test, huge friend group" 🌸

✨ NAME ✨

dm_test_brightness_range_zero_signals — the test that checks the Brightness range with zero min and max signals 🔥 (yes queen, zero min and zero max, that's the whole vibe)

🎀 SYNOPSIS 🎀

void dm_test_brightness_range_zero_signals (struct kunit *test );

like, that's it. that's the whole signature. no cap 💅

🦋 ARGUMENTS 🦋

  • test — the KUnit test context 🧚 that's the one (1) thing this function takes, and it's the standard KUnit context, so you already know what to do with it if you've met any of her sixty-nine friends below 👑

👑 SEE ALSO 👑

bestie. BESTIE. the friend group is massive. every single one of these is invited to the party, okay, don't skip any of them 🙈

first, the kernel file where all this lives 📁

  • Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_backlight_test.c — that's the address, screenshot it, put it in your notes 🌈

and now the whole squad, in order, no gates kept 💖

like, that's sixty-nine cross-references. sixty-nine!! ate and left no crumbs 🍓✨

💀 real talk though: this test is specifically about min and max both being zero signals, so don't go assuming it covers the nonzero cases — that's what dm_test_brightness_range_pwm(9) and dm_test_brightness_range_aux(9) are for, iykyk 🫶

and that's the page, bestie!! 🎀 source/version vibes: ./drivers/gpu/drm/amd/display/... — October 2026 🦋✨ periodt, go run your KUnit tests 💜

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