dm_mst_test...ctor_setting(9)

💅 dm_mst_test_reset_connector_setting(9) — like, the Kernel API Manual moment 🫶

okay bestie, welcome to the Kernel API Manual, no big deal, just kernel docs but make it cute ✨ this one's a little hottie of a test function and i'm obsessed.

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🌸 NAME 🌸

dm_mst_test_reset_connector_setting — the function whose whole job is testing that MST connector setting reset actually resets, fr fr 💅

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🦋 SYNOPSIS 🦋

void dm_mst_test_reset_connector_setting (struct kunit *test );

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🎀 ARGUMENTS 🎀

• test — the KUnit test context, aka the little group-chat where this test lives 🫶

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✨ DESCRIPTION ✨

okay so here's the vibe: this test goes and verifies that amdgpu_dm_mst_reset_mst_connector_setting actually clears all the cached stuff it's supposed to clear. and when i say all, i mean ALL 🔥

it's checking that these get cleared:

• the cached EDID
• the DSC AUX
• the passthrough AUX
• the local bandwidth
• and the VC PBN state

like yes ma'am, clean slate, empty cache, iconic behavior honestly 👑

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👑 SEE ALSO 👑

first up, the actual kernel file it lives in, iykyk:

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

and now the whole squad, literally the entire friend group 🫶✨:

• dm_mst_test_needs_dsc_aux_workaround_match(9)
• dm_mst_test_needs_dsc_aux_workaround_rev12(9)
• dm_mst_test_needs_dsc_aux_workaround_wrong_dev_id(9)
• dm_mst_test_needs_dsc_aux_workaround_wrong_rev(9)
• dm_mst_test_needs_dsc_aux_workaround_low_sink_count(9)
• dm_mst_test_needs_dsc_aux_workaround_zero_sink_count(9)
• dm_mst_test_pbn_divider_null_link(9)
• dm_mst_test_pbn_divider_uses_link_bandwidth(9)
• dm_mst_test_retrieve_downstream_no_aux(9)
• dm_mst_test_retrieve_downstream_present(9)
• dm_mst_test_retrieve_downstream_aux_error(9)
• dm_mst_test_retrieve_branch_no_parent(9)
• dm_mst_test_retrieve_branch_reads_oui(9)
• dm_mst_test_aux_result_success(9)
• dm_mst_test_aux_result_eio(9)
• dm_mst_test_aux_result_ebusy(9)
• dm_mst_test_aux_result_timeout(9)
• dm_mst_test_aux_transfer_native_read(9)
• dm_mst_test_aux_transfer_native_write(9)
• dm_mst_test_aux_transfer_partial_write(9)
• dm_mst_test_aux_transfer_error_result(9)
• dm_mst_test_aux_transfer_hpd_discon_quirk(9)
• dm_mst_test_aux_transfer_non_ack_reply(9)
• dm_mst_test_fill_payload_flags_native_write(9)
• dm_mst_test_fill_payload_flags_native_read(9)
• dm_mst_test_fill_payload_flags_i2c_read_mot(9)
• dm_mst_test_fill_payload_flags_write_status(9)
• dm_mst_test_msg_ready_mask(9)
• dm_mst_test_select_esi_dpcd_legacy(9)
• dm_mst_test_select_esi_dpcd_esi(9)
• dm_mst_test_sideband_msg_ready_no_ready_bits(9)
• dm_mst_test_sideband_msg_ready_read_error(9)
• dm_mst_test_sideband_msg_ready_without_mst_state(9)
• dm_mst_test_down_rep_msg_ready_wrapper(9)
• dm_mst_test_initialize_dp_connector_edp(9)
• dm_mst_test_initialize_dp_connector_mst(9)
• dm_mst_test_atomic_best_encoder(9)
• dm_mst_test_create_fake_mst_encoders(9)
• dm_mst_test_atomic_check_no_old_crtc(9)
• dm_mst_test_detect_unregistered(9)
• dm_mst_test_fp_guarded_public_stubs(9)

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okay that's the whole page bestie, ily, go read the other ones too 💜

and for the credits moment, this cutie came from ./drivers/gpu/drm/amd/display/..., dated October 2026 — periodt, stan, goodbye 🌈⭐🍓