dm_test_sub...ial_transfer(9)

💅 dm_test_sub...ial_transfer(9) — Kernel API Manual ✨

okay so bestie, welcome to the kernel API manual for dm_test_sub...ial_transfer(9) — yes that's the page title, no I didn't make it up, the kernel devs did 🫶. Sit down, hydrate, and let's get into it, because this one is short and sweet and honestly kind of a mood.

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✨ NAME ✨

dm_test_submit_i2c_partial_transfer — it tests that a short i2c transfer returns false. that's it. that's the whole job. a tiny little function with a very specific agenda 💅

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🌸 SYNOPSIS 🌸

void dm_test_submit_i2c_partial_transfer (struct kunit *test );

look at her go. void return, one arg, no notes 💖

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🦋 ARGUMENTS 🦋

• test — the KUnit test context, bestie. it's the lil' bundle of state KUnit hands you so the test can actually do its thing. that's the whole argument list, we're done here 👑

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🎀 SEE ALSO 🎀

okay so this is the part where I need you to breathe. this test does not exist alone — it's part of a whole little found family of tests living in the kernel file:

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

and here's the entire squad, every single one of them, no cap, in the order the manual gives them ✨

dm_test_edid_extract_panel_id_basic(9),
dm_test_edid_extract_panel_id_zeros(9),
dm_test_apply_edid_quirks_dpcd_poweroff_delay(9),
dm_test_apply_edid_quirks_disable_fams(9),
dm_test_apply_edid_quirks_remove_sink_ext_caps(9),
dm_test_apply_edid_quirks_disable_colorimetry(9),
dm_test_apply_edid_quirks_skip_phy_ssc(9),
dm_test_apply_edid_quirks_unknown_noop(9),
dm_test_parse_edid_caps_null_edid(9),
dm_test_parse_edid_caps_null_caps(9), dm_test_parse_edid_caps_valid(9),
dm_test_parse_edid_caps_bad_checksum(9),
dm_test_parse_edid_caps_hdmi_frl(9),
dm_test_parse_edid_caps_hdmi_frl_dsc(9),
dm_test_parse_edid_caps_cea_audio(9),
dm_test_parse_edid_caps_cea_no_speaker(9),
dm_test_probe_acpi_edid_no_companion(9),
dm_test_read_acpi_edid_debug_mask_disabled(9),
dm_test_read_acpi_edid_non_panel_connector(9),
dm_test_read_acpi_edid_force_off(9),
dm_test_read_vbios_edid_non_embedded(9),
dm_test_read_vbios_edid_missing_callback(9),
dm_test_read_vbios_edid_callback_error(9),
dm_test_read_vbios_edid_missing_fake_edid(9),
dm_test_read_vbios_edid_invalid_fake_edid(9),
dm_test_read_vbios_edid_valid(9),
dm_test_freesync_pcon_whitelist_all_known(9),
dm_test_freesync_pcon_whitelist_not_in_list(9),
dm_test_freesync_pcon_whitelist_zero(9),
dm_test_populate_hdmi_scdc_present_true(9),
dm_test_populate_hdmi_scdc_present_false(9),
dm_test_populate_hdmi_frl_dsc_10bpc(9),
dm_test_populate_hdmi_frl_dsc_12bpc(9),
dm_test_populate_hdmi_frl_dsc_unknown_values(9),
dm_test_adaptive_sync_type_none_default(9),
dm_test_adaptive_sync_type_converter_no_conditions(9),
dm_test_adaptive_sync_type_converter_partial_conditions(9),
dm_test_adaptive_sync_type_pcon_whitelist(9),
dm_test_adaptive_sync_type_converter_nonwhitelist(9),
dm_test_helpers_is_fullscreen_returns_false(9),
dm_test_helpers_is_hdr_on_returns_false(9),
dm_test_get_max_frl_rate_3lanes_3gbps(9),
dm_test_get_max_frl_rate_3lanes_6gbps(9),
dm_test_get_max_frl_rate_4lanes_6gbps(9),
dm_test_get_max_frl_rate_4lanes_8gbps(9),
dm_test_get_max_frl_rate_4lanes_10gbps(9),
dm_test_get_max_frl_rate_4lanes_12gbps(9),
dm_test_get_max_frl_rate_unknown(9),
dm_test_dtn_log_buffer_accumulates(9),
dm_test_dtn_log_null_ctx_no_crash(9), dm_test_dp_read_dpcd_null_priv(9),
dm_test_dp_write_dpcd_null_priv(9), dm_test_dp_read_dpcd_success(9),
dm_test_dp_write_dpcd_success(9),
dm_test_execute_fused_io_null_dmub_srv(9),
dm_test_execute_synaptics_rc_command_write_success(9),
dm_test_execute_synaptics_rc_command_read_success(9),
dm_test_execute_synaptics_rc_command_write_fail(9),
dm_test_apply_synaptics_fifo_reset_wa_full(9),
dm_test_apply_synaptics_fifo_reset_wa_first_fail(9),
dm_test_write_dsc_enable_synaptics_enable_inactive(9),
dm_test_write_dsc_enable_synaptics_enable_active(9),
dm_test_write_dsc_enable_synaptics_disable_inactive(9),
dm_test_write_dsc_enable_synaptics_disable_active(9),
dm_test_write_dsc_enable_synaptics_enable_non_synaptics(9),
dm_test_dp_write_dsc_enable_routes_synaptics(9),
dm_test_mst_start_top_mgr_null_priv(9),
dm_test_mst_stop_top_mgr_null_priv(9),
dm_test_mst_start_top_mgr_boot(9),
dm_test_dp_write_hblank_reduction_false(9),
dm_test_get_dsc_max_slices_1_340(9),
dm_test_get_dsc_max_slices_2_340(9),
dm_test_get_dsc_max_slices_4_340(9),
dm_test_get_dsc_max_slices_8_340(9),
dm_test_get_dsc_max_slices_8_400(9),
dm_test_get_dsc_max_slices_12_400(9),
dm_test_get_dsc_max_slices_16_400(9),
dm_test_get_dsc_max_slices_unknown(9),
dm_test_init_panel_settings_pps(9), dm_test_init_panel_settings_dsc(9),
dm_test_override_panel_settings_debug_mask_disables_dsc(9),
dm_test_override_panel_settings_second_edp_disables_psr(9),
dm_test_fill_mst_payload_table_enable(9),
dm_test_fill_mst_payload_table_disable(9),
dm_test_fill_mst_payload_table_empty(9),
dm_test_submit_i2c_null_priv(9), dm_test_submit_i2c_success(9),
dm_test_dmub_aux_transfer_sync_hpd_discon(9),
dm_test_dp_update_branch_info_no_crash(9),
dm_test_mst_poll_pending_down_reply_no_crash(9),
dm_test_mst_clear_payload_alloc_table_no_crash(9),
dm_test_set_dcn_clocks_no_crash(9), dm_test_dmu_timeout_no_crash(9),
dm_test_smu_timeout_no_crash(9), dm_test_set_phyd32clk_no_crash(9),
dm_test_mst_update_branch_bandwidth_no_crash(9),
dm_test_mst_write_payload_alloc_table_null_ctx(9),
dm_test_mst_poll_for_act_null_ctx(9),
dm_test_mst_send_payload_alloc_null_ctx(9),
dm_test_mst_update_mgr_dealloc_null_ctx(9),
dm_test_is_dp_sink_present_null_priv(9),
dm_test_dmub_outbox_interrupt_control_null_dc(9),
dm_test_mst_enable_stream_features_aux_disabled(9),
dm_test_mst_enable_stream_features_writes_downspread(9),
dm_test_enable_periodic_detection_no_workqueue(9),
dm_test_enable_periodic_detection_updates_enable(9),
dm_test_enable_periodic_detection_schedules_work(9),
dm_test_read_mccs_caps_null_ctx(9), dm_test_read_mccs_caps_null_link(9),
dm_test_read_mccs_caps_no_vcp_code(9),
dm_test_read_mccs_caps_i2c_vcp_request(9),
dm_test_read_mccs_caps_hdmi_vcp_request(9),
dm_test_read_mccs_caps_legacy_pcon_vcp_request(9),
dm_test_read_mccs_caps_i2c_failure(9), dm_test_mccs_vcp_set_null_ctx(9),
dm_test_mccs_vcp_set_not_supported(9),
dm_test_mccs_vcp_set_null_link(9), dm_test_mccs_vcp_set_i2c_packet(9),
dm_test_mccs_vcp_set_i2c_failure(9),
dm_test_construct_old_payload_empty_list(9),
dm_test_construct_old_payload_intervening(9),
dm_test_write_payload_alloc_table_success(9),
dm_test_write_payload_alloc_table_enable(9),
dm_test_write_payload_alloc_table_disable(9),
dm_test_mst_start_top_mgr_set_mst_fail(9),
dm_test_mst_stop_top_mgr_active(9),
dm_test_poll_for_act_no_mst_state(9), dm_test_poll_for_act_success(9),
dm_test_poll_for_act_status_failed(9),
dm_test_mst_send_payload_alloc_part2_fail(9),
dm_test_mst_update_mgr_dealloc_success(9),
dm_test_dp_write_dsc_enable_mst_no_aux(9),
dm_test_dp_write_dsc_enable_non_dp(9),
dm_test_dp_write_dsc_enable_mst_enable_decode_only(9),
dm_test_dp_write_dsc_enable_mst_enable_passthrough(9),
dm_test_dp_write_dsc_enable_mst_disable_decode_only(9),
dm_test_dp_write_dsc_enable_mst_disable_passthrough(9),
dm_test_dp_write_dsc_enable_sst_rx_enable(9),
dm_test_dp_write_dsc_enable_sst_rx_disable(9),
dm_test_dp_write_dsc_enable_pcon_enable(9),
dm_test_dp_write_dsc_enable_pcon_disable(9),
dm_test_dp_handle_test_pattern_no_pipe(9)

like… that is a roster 👑 the whole display-helper test suite said "we're all showing up to this SEE ALSO" and honestly? iconic.

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💀 real talk bestie: this page gives you the test's name, its one argument, and its homies. nothing more, nothing less. if you came here for paragraph-long behavioural lore, the vibe check says no — that's what the source file is for 🦋

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🌈 the cute lil' sign-off 🌈

this page lives at ./drivers/gpu/drm/amd/display/... in the kernel tree, and the version stamp on it says October 2026 🎀 that's the date, that's the source, and that's the end of the page. slay, stay hydrated, go read dm_test_submit_i2c_null_priv(9) next, mwah 💖✨