dm_test_i2c_xfer_no_ddc_pin(9)

📦 version 7.3.1, in nixpkgs unstable

✨ dm_test_i2c_xfer_no_ddc_pin ✨

okay so you're reading a page from the Kernel API Manual — yes bestie, that's the actual manual section, and this one is lowkey a tiny little test that guards a very specific door 🚪💅

🎀 NAME 🎀

dm_test_i2c_xfer_no_ddc_pin — literally just "Test transfers without a DDC pin are rejected" 🫶

🌸 SYNOPSIS 🌸

void dm_test_i2c_xfer_no_ddc_pin (struct kunit *test );

🦋 ARGUMENTS 🦋

  • test — The KUnit test context. that's it, that's the whole argument, she's the main character of the param list 👑

💖 DESCRIPTION 💖

Okay so picture this ✨ When the backing ddc_service has no ddc_pin, the transfer bails out early with -EIO — like, it does not even try — before touching the message buffers or the dc handle. No cap, it just nopes out at the door and never reaches the stuff inside 🙈

the vibe: early exit, -EIO, buffers untouched, dc handle untouched. periodt.

🔥 SEE ALSO 🔥

Kernel file:

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

and now the entire test family, because of course she has a whole friend group 👯‍♀️💜 — all of these are (9) pages, and here they are, every single one of them:

like, that's the whole squad, she said "you're coming with me" and dragged every single one of them into the SEE ALSO 🌈👑

okay that's the page bestie, you ate that 💅 tiny sign-off for the credits stans: this lil masterpiece comes from the source ./drivers/gpu/drm/amd/display/..., dated October 2026, and it lives on as dm_test_i2c_xfer_no_ddc_pin(9) forever and ever 🎀✨🦋

📦 where this page comes from