dm_test_val..._null_stream(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 dm_test_val..._null_stream(9) 🎀

okay so bestie, welcome to the Kernel API Manual ✨ this one's a lil KUnit test page and it's honestly iconic in its simplicity. pull up a chair, grab a strawberry 🍓, and let's get into it.

💖 NAME 💖

dm_test_validate_stream_null_stream — the test that checks what happens when you hand it a NULL stream and expects the whole thing to come back with "unexpected" energy. literally her whole personality 🫶

✨ SYNOPSIS ✨

void dm_test_validate_stream_null_stream (struct kunit *test );

🌸 ARGUMENTS 🌸

  • test — the KUnit test context, aka the lil scaffolding that holds this whole vibe together. she's the main character's dressing room 💅

🦋 DESCRIPTION 🦋

so here's the tea ☕: when the stream is NULL, the validation doesn't even try to be brave. it jumps straight to cleanup, never once dereferencing the dc handle (not me being respectful of pointers 😌), and reports DC_ERROR_UNEXPECTED.

no crashes, no chaos, no drama. just a clean exit and a very clear error code. slay, honestly. ✨

💀 lowkey the safest possible outcome — a NULL stream gets treated like a NULL stream, and the dc handle stays untouched the entire time. no deref, no cap.

🌈 SEE ALSO 🌈

bestie. bestie. look at this list. this is the entire group chat 😭💖

Kernel file

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

and now, the squad (all in (9), all iconic):

and that's the whole page, bestie 🧚 literally every test in the family showed up and they all ate 💅

okay and for the lil sign-off: this one comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — so mark your calendar, she's a future icon 👑✨ bye bestie, go dereference something safely 😭💖

📦 where this page comes from