dm_mst_test_...o_sink_count(9)

dm_mst_test_...o_sink_count(9)

okay bestie, welcome to the Kernel API Manual page for the most specific little KUnit test 💅✨ this one is all about zero sinks and skipping a workaround, and yes it is exactly as niche as it sounds.

🎀 NAME 🎀

dm_mst_test_needs_dsc_aux_workaround_zero_sink_count — the test that checks the workaround gets skipped for zero sinks 🎀

✨ SYNOPSIS ✨

void dm_mst_test_needs_dsc_aux_workaround_zero_sink_count (struct kunit
       *test );

🧚 ARGUMENTS 🧚

• test — KUnit test context. that's the whole argument, bestie 🧚

🌸 DESCRIPTION 🌸

okay so this test literally verifies that needs_dsc_aux_workaround returns false when the sink count is zero — even if device ID and DPCD rev match. no cap, that's the vibe: zero sinks, workaround skipped, test says slay ✅🌸

🔥 SEE ALSO 🔥

Kernel file

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

the rest of the test gang is right here, and yes every single one is invited 🫶👑

• 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_pbn_divider_null_link(9)
• dm_mst_test_pbn_divider_uses_link_bandwidth(9)
• dm_mst_test_reset_connector_setting(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)

bye bestie 🫶 this iconic page came from source/version ./drivers/gpu/drm/amd/display/..., dated October 2026, and it will forever be dm_mst_test_...o_sink_count(9) 💖✨