dm_test_wb_..._check_valid(9)

💅 dm_test_wb_..._check_valid(9) — Kernel API Manual

okay bestie, welcome to the manual page for dm_test_wb_..._check_valid(9) — yes that title is a whole mood, and yes it lives in the Kernel API Manual. grab a lil snack 🍓, we’re checking a writeback atomic-check test.

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✨ NAME ✨

dm_test_wb_atomic_check_valid — verify success with matching size and supported format 💖

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🛠️ SYNOPSIS 🛠️

void dm_test_wb_atomic_check_valid (struct kunit *test );

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🧪 ARGUMENTS 🧪

• test — the KUnit test context. that’s the lil test-world passport this function gets handed 🫶

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🌸 DESCRIPTION 🌸

so here’s the vibe: when the framebuffer dimensions match the CRTC mode, and the pixel format is in the supported formats list, this function should return 0. no cap. that’s the success case, and it’s giving “everything lines up, we love to see it” ✨

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👀 SEE ALSO 👀

Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_wb_test.c

also go peek at these iconique lil test neighbors:

• dm_test_wb_atomic_check_no_job(9)
• dm_test_wb_atomic_check_no_fb(9)
• dm_test_wb_atomic_check_size_mismatch(9)
• dm_test_wb_atomic_check_width_mismatch(9)
• dm_test_wb_atomic_check_height_mismatch(9)
• dm_test_wb_atomic_check_invalid_format(9)
• dm_test_wb_get_modes_returns_modes(9)
• dm_test_wb_get_modes_bounded_by_max(9)
• dm_test_wb_connector_init_success(9)
• dm_test_wb_prepare_job_no_fb(9)
• dm_test_wb_cleanup_job_no_fb(9)

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okay that’s the whole page, bestie 💅 shoutout to the source/version footer ./drivers/gpu/drm/amd/display/... and the date October 2026, and yes the manual name is dm_test_wb_..._check_valid(9) 🎀 bye slay.