dm_test_crc_...d_start_dprx(9)

📦 version 7.3.1, in nixpkgs unstable

👑 dm_test_crc_source_should_start_dprx — a Kernel API Manual moment 💅

okay so bestie, welcome to the Kernel API Manual — this page is literally all about dm_test_crc_...d_start_dprx(9) (yes the title is doing the absolute most with that truncation, we love her anyway 🎀). Buckle up, it's a KUnit test and she's precious.

✨ NAME ✨

dm_test_crc_source_should_start_dprx — the test that checks up on dm_crc_source_should_start_dprx(). it's giving "responsible friend verifying you actually did the thing" 🫶

🌸 SYNOPSIS 🌸

void dm_test_crc_source_should_start_dprx (struct kunit *test );

🦋 ARGUMENTS 🦋

  • test — the KUnit test context. that's it, that's the whole argument. she's low-maintenance 💅

💖 DESCRIPTION 💖

so what does this test actually do? okay so — it verifies that dm_crc_source_should_start_dprx returns true only when CRC is transitioning from off (!enabled) to a DPRX source (enable && is_dprx(source)). like, that's the one singular moment she's allowed to say yes ✨

and for every other combination? false. all of them. no cap. including the cases where it's already enabled, or the target is non-DPRX. those get a big fat nope 💀

it's giving "strict bouncer at the club, if you're not on the list you're not getting in" 🔥

🧚 SEE ALSO 🧚

the whole friend group, fr fr — go say hi:

💜 and that's the whole page bestie. go forth and test responsibly.

okay so the sign-off era: this iconic little page lives at ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — future queen behavior honestly ⭐ slay, bye! 🌈💅

📦 where this page comes from