dm_test_add_...eferred_mode(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

okay so bestie, this is the <italic>Kernel API Manual</italic> page for dm_test_add_fs_modes_no_preferred_mode — literally the test that proves "no preferred mode" means you get no modes, zero, nada, an empty vibe. 💅

✨ SYNOPSIS ✨

void dm_test_add_fs_modes_no_preferred_mode (struct kunit *test );

🎀 ARGUMENTS 🎀

  • test — the KUnit test context, aka the little backstage pass that tells the test who it is and where it lives. 🫶

🦋 DESCRIPTION 🦋

so here's the tea ☕ — a writeback connector has no highest-refresh-rate mode. none. not a single one, bestie, it's giving "empty calendar."

because of that, add_fs_modes literally cannot build any FreeSync video modes, so it returns 0. and the test is like "yep, correct, slay." 👑

no modes built, return value 0, test passes. iconic behavior, no cap. ⭐

💖 SEE ALSO 💖

the whole squad, fr fr — Kernel file:

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

okay that's the whole page bestie, go touch some drm code 💜

this came from source ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — yeah, future vibes, main character energy only 🔥👑✨

📦 where this page comes from