ishtp_write_message(9)

💌 ishtp_write_message — a Kernel API Manual moment

Okay bestie, welcome to the ishtp_write_message(9) page 💅 this one lives in the Kernel API Manual and it's giving "small but mighty" energy — a single function that yeets one fragment over IPC. Let's get into it ✨

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🌸 NAME 🌸

ishtp_write_message — Send ishtp single fragment message 🎀

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🦋 SYNOPSIS 🦋

int ishtp_write_message (struct ishtp_device *dev , struct ishtp_msg_hdr
*hdr , void *buf );

Like, three arguments, one int coming back. Lowkey elegant, ngl 🫶

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⭐ ARGUMENTS ⭐

• dev — the ishtp device 💖
• hdr — the Message header 🎀
• buf — the message data 🌸

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💫 DESCRIPTION 💫

So here's the tea: this sends a single fragment message via IPC, and it returns the IPC send message status. That's it. That's the whole vibe. No cap, it really is that straightforward 🔥

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👑 RETURN 👑

This returns IPC send message status — yes, the exact same thing the description said, but bestie we keep the receipts fr fr 😭

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🌈 SEE ALSO 🌈

The kernel file for this is ./drivers/hid/intel-ish-hid/ishtp/bus.c, and here's the whole friend group — go say hi 🫶:

• ishtp_recv(9)
• ishtp_send_msg(9)
• ishtp_fw_cl_by_uuid(9)
• ishtp_fw_cl_get_client(9)
• ishtp_get_fw_client_id(9)
• ishtp_fw_cl_by_id(9)
• ishtp_cl_device_probe(9)
• ishtp_cl_bus_match(9)
• ishtp_cl_device_remove(9)
• ishtp_cl_device_suspend(9)
• ishtp_cl_device_resume(9)
• ishtp_cl_device_reset(9)
• ishtp_bus_add_device(9)
• ishtp_bus_remove_device(9)
• ishtp_cl_driver_register(9)
• ishtp_cl_driver_unregister(9)
• ishtp_bus_event_work(9)
• ishtp_cl_bus_rx_event(9)
• ishtp_register_event_cb(9)
• ishtp_get_device(9)
• ishtp_put_device(9)
• ishtp_set_drvdata(9)
• ishtp_get_drvdata(9)
• ishtp_dev_to_cl_device(9)
• ishtp_bus_new_client(9)
• ishtp_cl_device_bind(9)
• ishtp_bus_remove_all_clients(9)
• ishtp_reset_handler(9)
• ishtp_reset_compl_handler(9)
• ishtp_use_dma_transfer(9)
• ishtp_device(9)
• ishtp_wait_resume(9)
• ishtp_get_pci_device(9)
• ishtp_get_workqueue(9)
• ishtp_trace_callback(9)
• ish_hw_reset(9)
• ishtp_bus_register(9)
• ishtp_bus_unregister(9)

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Fr fr, that's literally every single one — don't skip any of them, they're all invited to the function party 🧚

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Okay that's the whole page, bestie! 💖 It comes from the directory ./drivers/hid/intel-ish-hid/ishtp, dated October 2026, and you found it right here on ishtp_write_message(9) — slay, go write some single fragment messages, periodt ✨💅