dm_test_wb_...ght_mismatch(9)

🦋 dm_test_wb_...ght_mismatch(9) 🦋

okay bestie, welcome to the Kernel API Manual ✨ this one's a lil niche but it's giving "very specific unit test" energy and honestly? we stan a focused icon 💅

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🌸 NAME 🌸

dm_test_wb_atomic_check_height_mismatch — literally just here to verify that things get rejected when the height alone is the thing that differs 🎀

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✨ SYNOPSIS ✨

void dm_test_wb_atomic_check_height_mismatch (struct kunit *test );

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🫶 ARGUMENTS 🫶

• test — the KUnit test context, iykyk 🌈 it's the lil bundle of test-state that gets handed in so the test can actually do its thing

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💜 DESCRIPTION 💜

so here's the vibe: when only the framebuffer height differs from the CRTC mode vdisplay, the function should return -EINVAL 😭 like, it's a mismatch, bestie, the function is NOT gonna pretend that's fine. no cap, that's the whole test. one job. iconic behaviour honestly 👑

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🔥 SEE ALSO 🔥

Kernel file:

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

and the rest of the friend group 💖:

• dm_test_wb_atomic_check_no_job(9)
• dm_test_wb_atomic_check_no_fb(9)
• dm_test_wb_atomic_check_valid(9)
• dm_test_wb_atomic_check_size_mismatch(9)
• dm_test_wb_atomic_check_width_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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🍓 reminder bestie: for real though, if the height doesn't match vdisplay, expect -EINVAL. that's the whole point, don't forget it 💀

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okay that's the page!! brought to you by the Kernel API Manual, sourced from ./drivers/gpu/drm/amd/display/..., dated October 2026, and filed under dm_test_wb_...ght_mismatch(9) 🧚 mwah, ty for reading, ily, go run your tests 💜✨🎀