dm_test_crtc...figure_fails(9)

✨ dm_test_crtc_configure_crc_source_crtc_configure_fails(9) ✨

okay so bestie, welcome to the kernel API manual for dm_test_crtc_configure_crc_source_crtc_configure_fails — yes that's the whole name, no I'm not shortening it, it's iconic and it ate 💅

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🌸 NAME 🌸

dm_test_crtc_configure_crc_source_crtc_configure_fails — literally a test for the failure path. that's it, that's the vibe 🫶

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🎀 SYNOPSIS 🎀

void dm_test_crtc_configure_crc_source_crtc_configure_fails (struct kunit *test );

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🦋 ARGUMENTS 🦋

• test — the KUnit test context, aka the little backstage pass this test gets handed so it can do its thing ✨

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💖 DESCRIPTION 💖

so what does this test actually do? it verifies that a DC CRC configuration failure gets reported as -EINVAL — and that it stops before dither/dynamic expansion programming. no cap, it's checking that the failure bails out cleanly instead of just… continuing on and programming stuff it shouldn't 😭 periodt.

like, the whole point is: when config fails, report -EINVAL and stop. don't keep going. that's the assignment and it understood it 🔥

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👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_crc_test.c
• dm_test_crtc_get_crc_sources(9)
• dm_test_crtc_verify_crc_source_valid(9)
• dm_test_crtc_verify_crc_source_invalid(9)
• dm_test_crtc_configure_crc_source_no_stream(9)
• dm_test_crtc_configure_crc_source_dprx(9)
• dm_test_crtc_configure_crc_source_dprx_dither(9)
• dm_test_crtc_configure_crc_source_crtc(9)
• dm_test_crtc_configure_crc_source_crtc_dcn36_poly(9)
• dm_test_crtc_configure_crc_source_none(9)
• dm_test_crtc_set_crc_source_invalid(9)
• dm_test_crtc_set_crc_source_none_no_stream(9)
• dm_test_crtc_set_crc_source_none_commit(9)
• dm_test_crtc_set_crc_source_dprx_no_connector(9)
• dm_test_crtc_handle_crc_irq_early_returns(9)
• dm_test_crtc_handle_crc_irq_disabled_source(9)
• dm_test_crtc_handle_crc_irq_skips_initial_frames(9)
• dm_test_crtc_handle_crc_irq_dprx_after_skip(9)
• dm_test_crtc_handle_crc_irq_get_crc_fails(9)
• dm_test_need_dp_aux(9)
• dm_test_crc_source_should_start_dprx(9)
• dm_test_crc_source_should_stop_dprx(9)

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and that's the whole page, bestie 🌈 this lil blessing dropped from ./drivers/gpu/drm/amd/display/... in October 2026 — go read the source file, it's giving main character energy fr fr 💜⭐