dmub_srv_upd...inbox_status(9)

💖 dmub_srv_update_inbox_status — the Kernel API Manual moment 🎀

okay bestie, so this page lives in the manual named dmub_srv_upd...inbox_status(9) (yes the title got truncated, it's literally giving "my name is too long for the tab bar" energy, we love her anyway 💅). Sit down, hydrate, and let's get into it.

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✨ NAME ✨

dmub_srv_update_inbox_status — updates the pending status for the inbox & reg inbox0. that's it, that's the whole job, and she does it flawlessly 🫶

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🌸 SYNOPSIS 🌸

enum dmub_status dmub_srv_update_inbox_status(struct dmub_srv *dmub);

like... one arg, one return type. clean, minimal, iconic. no cap.

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🦋 ARGUMENTS 🦋

• dmub — the dmub service ✨ like, the whole service struct. the main character of this function, honestly.

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💜 RETURN 💜

she comes back with an enum dmub_status and here's the whole vibe check on what each one means:

• DMUB_STATUS_OK — success 💖 everything ate, no crumbs, we move.
• DMUB_STATUS_TIMEOUT — the wait for the buffer to flush timed out 😭 like it just... did not flush in time. tragic but valid.
• DMUB_STATUS_HW_FAILURE — there's an issue with HW programming 💀 the hardware said "not today."
• DMUB_STATUS_INVALID — unspecified error 🙈 the vague mysterious one, our little enigma.

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🔥 SEE ALSO 🔥

okay this list is LONG, grab a snack, we're going through ALL of it because we don't skip entries in this house 👑

The kernel file ./drivers/gpu/drm/amd/display/dmub/dmub_srv.h — that's the home turf, go read it, iykyk.

And then the whole friend group:

• DMUB interface and operation(9)
• struct dmub_region(9)
• struct dmub_window(9)
• struct dmub_fb(9)
• struct dmub_srv_region_params(9)
• struct dmub_srv_fw_meta_info_params(9)
• struct dmub_srv_region_info(9)
• struct dmub_srv_memory_params(9)
• struct dmub_srv_fb_info(9)
• struct dmub_soc_fb_info(9)
• struct dmub_diagnostic_data(9)
• struct dmub_preos_info(9)
• struct dmub_srv_base_funcs(9)
• struct dmub_srv_hw_funcs(9)
• struct dmub_srv_create_params(9)
• struct dmub_srv(9)
• struct dmub_notification(9)
• dmub_srv_create(9)
• dmub_srv_destroy(9)
• dmub_srv_calc_region_info(9)
• dmub_srv_has_hw_support(9)
• dmub_srv_is_hw_init(9)
• dmub_srv_hw_init(9)
• dmub_srv_hw_reset(9)
• dmub_srv_fb_cmd_queue(9)
• dmub_srv_fb_cmd_execute(9)
• dmub_srv_wait_for_hw_pwr_up(9)
• dmub_srv_wait_for_auto_load(9)
• dmub_srv_wait_for_phy_init(9)
• dmub_srv_wait_for_pending(9)
• dmub_srv_wait_for_idle(9)
• dmub_srv_send_gpint_command(9)
• dmub_srv_get_gpint_response(9)
• dmub_srv_get_gpint_dataout(9)
• dmub_srv_flush_buffer_mem(9)
• dmub_srv_get_fw_boot_status(9)
• dmub_srv_send_inbox0_cmd(9)
• dmub_srv_wait_for_inbox0_ack(9)
• dmub_srv_subvp_save_surf_addr(9)
• dmub_srv_set_power_state(9)
• dmub_srv_reg_cmd_execute(9)
• dmub_srv_cmd_get_response(9)
• dmub_srv_sync_inboxes(9)
• dmub_srv_wait_for_inbox_free(9)
• dmub_srv_get_preos_info(9)
• dmub_srv_get_fw_meta_info_from_raw_fw(9)

like, that's the whole dmub_srv extended universe fr fr. read them all, they're all slay 🌈

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💡 friendly reminder bestie: this page is part of the Linux kernel API docs, so the source path is ./drivers/gpu/drm/amd/display/... and the date on the file is October 2026 — don't come for me, that's just what the footer says 😭

okay that's the page!! mwah 💋 go call dmub_srv_update_inbox_status, check your dmub pointer isn't null, and have the most slay day ever ⭐🎀💖 — with love, your local dmub_srv_upd...inbox_status(9) manual page 🧚‍♀️