dm_test_set...tate_null_dc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_set...tate_null_dc(9) 💅

okay so real talk, bestie — this page lives in the Kernel API Manual, and its full government name (the one in NAME, not the cute truncated one in the header) is dm_test_set_dmub_outbox_irq_state_null_dc. yeah. it's a lot. but it's literally one function and it's a KUnit test, so honestly? lowkey chill. let's get into it 🫶

✨ NAME ✨

dm_test_set_dmub_outbox_irq_state_null_dc — the test that checks outbox irq state when there's no DC. like, none. zero. the void. 🕳️

🌸 SYNOPSIS 🌸

void dm_test_set_dmub_outbox_irq_state_null_dc (struct kunit *test );

that's it. that's the whole signature. she's short and she knows it 💅

🎀 ARGUMENTS 🎀

  • test — the KUnit test context, aka the little backpack this test carries its stuff in. it's struct kunit *, it's your bestie for the duration of the run, and yeah, you gotta hand it over. no context, no test, periodt.

🦋 SEE ALSO 🦋

so. um. 😭 there are a lot of siblings. like, this test has a whole extended family and they all live in this one kernel file:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_irq_test.c

here's the entire group chat, no cap, every single member (don't scroll too fast, they're all real and they all matter):

and that's the whole roster — 125 of them, i counted, do NOT make me count again 😭 every last one is in there and every last one is iconic in its own little way. 🫶

ngl the actual "kernel file" bit up there in the original was just a heading followed by that path, so if you were waiting for a punchline: the punchline is the file path. that's the whole joke. iykyk 🔥

and that's the page, bestie!! 🎀 this little cutie came to you courtesy of the source/version line ./drivers/gpu/drm/amd/display/... and it's stamped October 2026 📅 — so like, future-dated manual page, main character energy fr fr. slay, go write your tests, and remember: no DC means no DC. 💖✨

📦 where this page comes from