dm_mst_test...ch_no_parent(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_mst_test_retrieve_branch_no_parent(9) — or, "the branch lookup test that literally has no parent" 🎀

okay so bestie, welcome to the Kernel API Manual 💖 this is a whole KUnit test function and it's giving "small but iconic," no cap.

✨ NAME ✨

dm_mst_test_retrieve_branch_no_parent — the test that checks branch lookup actually needs a parent port 🫶

🌸 SYNOPSIS 🌸

void dm_mst_test_retrieve_branch_no_parent (struct kunit *test );

🦋 ARGUMENTS 🦋

  • test — the KUnit test context 💫 (yes queen, that's the whole argument, we love a low-maintenance signature)

💜 DESCRIPTION 💜

So here's the vibe check 🔥: this test verifies that retrieve_branch_specific_data returns false when the MST output port has no parent branch device to query.

That's it, that's the whole plot 🌈 no parent device → function says false → test passes → we celebrate 💅 periodt.

👑 SEE ALSO 👑

Kernel file 📁

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

and like, the entire friend group 🫶 (they all live in the same test file, iykyk):

anyway bestie, that's the whole page 💖 this dropped October 2026 and it's sourced from ./drivers/gpu/drm/amd/display/... — go read the tests, they're lowkey iconic 🌟 mwah 💋

📦 where this page comes from