ishtp_cl_driver_register(9)

✨ ishtp_cl_driver_register(9) ✨

okay so real talk bestie, you're looking at a page from the Kernel API Manual — the ishtp_cl_driver_register(9) one specifically — and honestly? it's a little guy with a big job. let's get into it 💅

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🌸 NAME 🌸

ishtp_cl_driver_register — Client driver register 🫶

like, the actual registering. of the driver. of the client. the whole vibe.

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🎀 SYNOPSIS 🎀

int ishtp_cl_driver_register (struct ishtp_cl_driver *driver , struct
       module *owner );

that's literally it. two args, one int back. iconic behaviour, no notes 💖

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🦋 ARGUMENTS 🦋

• driver — the client driver instance. yeah. that one. your driver, your instance, your moment ✨
• owner — Owner of this driver module. it owns the module. it's giving main character energy for the module ngl 👑

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🌈 DESCRIPTION 🌈

okay so here's the tea 🍓 — once a client driver is probed, it created a client instance and registers with the bus. that's the whole flow, periodt. probe happens, instance gets made, bus gets the registration. slay.

not me describing the entire life cycle in one sentence but honestly the original said it in one sentence so we're matching that energy fr fr 💀

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🔥 RETURN 🔥

Return value of driver_register or -ENODEV if not ready 😭

so like, you get back whatever driver_register gives you — unless things aren't ready yet, in which case you get -ENODEV. vibe check failed. try again later bestie 🙈

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⭐ SEE ALSO ⭐

bestie this list is LONG and honestly? i'm obsessed. every single one, no skips, no cutting corners 💜

The kernel file ./drivers/hid/intel-ish-hid/ishtp/bus.c is where all this lives, and here's the full squad:

ishtp_recv(9), ishtp_send_msg(9), ishtp_write_message(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_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)

go read them. all of them. i'll wait 💖✨

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aaaand that's the page!! 🎀 little sign-off: this one lives in ./drivers/hid/intel-ish-hid/ishtp, it's dated October 2026, and the header up top said ishtp_cl_driver_register(9) — that's the whole footer tea, delivered with love 🫶🌟