dm_test_hdcp...ializes_work(9)

📦 version 7.3.1, in nixpkgs unstable

💖 dm_test_hdcp_create_workqueue_initializes_work — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual 🎀 and honestly? this one's a KUnit test page, so it's short, sweet, and it ate. let's get into it 💅

🌸 NAME 🌸

dm_test_hdcp_create_workqueue_initializes_work — the success path that wires everything up 🫶

like, everything everything. no cap.

✨ SYNOPSIS ✨

void dm_test_hdcp_create_workqueue_initializes_work (struct kunit *test
);

🦋 ARGUMENTS 🦋

  • test — the KUnit test context 💜 this is your lil' passport for the test, that's it, that's the whole arg.

🔥 DESCRIPTION 🔥

okay so picture it: a single link. just the one. 🌈

With a single link, hdcp_create_workqueue must do all of these things, and we're holding it to every single one:

  • allocate the workqueue 🧚
  • allocate both SRM buffers (both of them, bestie, not one — both 🍓)
  • record max_link
  • publish the cp_psp callbacks and the handle
  • point every link's psp handle at the device psp 👑

and then there's the vibe check: a non-matching dce_version must leave dtm_v3_supported clear. ✨ so if the version doesn't match, that flag stays off. no sneaky setting it anyway. 🙈

for teardown, hdcp_destroy is what we use to take the workqueue down — and heads up, it also removes the SRM sysfs file that got created on the device kobject. 💀 so it's doing double duty, and yes, that's iconic of it.

👑 SEE ALSO 👑

the whole friend group 💖 — plus one very important kernel file:

and that's the page!! 💜 this lil' manual lives at ./drivers/gpu/drm/amd/display/... and it's dated October 2026 ⭐ — and the page title itself is dm_test_hdcp...ializes_work(9) if you were wondering what to call it. mwah 💋 go write some passing tests bestie 🎀

📦 where this page comes from