dm_test_wb_a...valid_format(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

okay so bestie, this is the manpage for dm_test_wb_atomic_check_invalid_format — and what it does is literally verify rejection of unsupported pixel format. that's the whole vibe. it's giving "test that says no to formats that aren't invited to the party" 🎀

this is from the Kernel API Manual, and the section is dm_test_wb_a...valid_format(9) — yes the name is long, yes it's iconic, we don't make the rules 👑

✨ SYNOPSIS ✨

void dm_test_wb_atomic_check_invalid_format (struct kunit *test );

that's it. that's the whole signature. clean, simple, slay 🦋

🌸 ARGUMENTS 🌸

  • test — the KUnit test context. it's the little carrying case for everything the test needs, and yes you gotta hand it over 💖

🔥 DESCRIPTION 🔥

okay so picture this: the framebuffer dimensions match perfectly — like, width and height are totally in agreement, no drama there — but then the pixel format is not in amdgpu_dm_wb_formats[]. 🚫

when that happens, the function should return -EINVAL.

that's the whole test. dimensions line up, format doesn't, and the answer is no. periodt. 💅

fr fr, the point here is confirming the rejection works — not in the list means not allowed, and -EINVAL is the receipts 😭

🦋 SEE ALSO 🦋

the kernel file lives right here, go look:

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

and here's the whole friend group of related tests, all linked up (iykyk):

and that's the page, bestie 💜 sign-off time: this one comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 🎀 big love to whoever maintains dm_test_wb_a...valid_format(9) — u ate ✨🌈⭐

📦 where this page comes from