ishtp_hbm_cl_disconnect_req(9)

✨ ishtp_hbm_cl_disconnect_req(9) ✨

okay so bestie, welcome to the Kernel API Manual entry for ishtp_hbm_cl_disconnect_req(9) — yes it's a mouthful, yes I say it in one breath, no I will not be taking questions 💅 This one lives in the land of Intel ISH-HID HBM stuff and it's honestly giving "tiny function, big job."

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🎀 NAME 🎀

ishtp_hbm_cl_disconnect_req — Send disconnect request

Like... that's it. That's the whole vibe. It sends the disconnect request. Main character energy, minimal description. 🫶

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🌸 SYNOPSIS 🌸

int ishtp_hbm_cl_disconnect_req (struct ishtp_device *dev , struct
       ishtp_cl *cl );

Return type int, two args, no cap. Note the exact spacing there, we do not editorialize the synopsis, we respect it 😌

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🦋 ARGUMENTS 🦋

• dev — the ISHTP device instance, aka the device bestie in question
• cl — the ISHTP client instance, aka the client bestie in question

Two structs walk into a function. That's the whole setup. 🍓

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💖 DESCRIPTION 💖

It sends a disconnect message to fw — "fw" meaning firmware, iykyk.

So yeah. The client wants out, this function is the one sliding the message over to the firmware. Nothing dramatic, just a polite little "we're done here" packet heading on its way. The way that it literally just does that one thing and then leaves? Iconic. 🌈

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⭐ RETURN ⭐

• 0 if success
• else error code 😭

Zero means slay, anything else means something went sideways and you get an error code to go investigate. fr fr check it.

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💜 SEE ALSO 💜

Source file, for when you wanna see the real thing:

• Kernel file ./drivers/hid/intel-ish-hid/ishtp/hbm.c

And the whole friend group of related calls — go say hi to all of them:

ishtp_hbm_fw_cl_allocate(9), ishtp_hbm_cl_hdr(9), ishtp_hbm_cl_addr_equal(9), ishtp_hbm_start_wait(9), ishtp_hbm_start_req(9), ishtp_hbm_enum_clients_req(9), ishtp_hbm_prop_req(9), ishtp_hbm_stop_req(9), ishtp_hbm_cl_flow_control_req(9), ishtp_hbm_cl_disconnect_res(9), ishtp_hbm_cl_connect_req(9), ishtp_hbm_cl_connect_res(9), ishtp_hbm_fw_disconnect_req(9), ishtp_hbm_dma_xfer_ack(9), ishtp_hbm_dma_xfer(9), ishtp_hbm_dispatch(9), bh_hbm_work_fn(9), recv_hbm(9), ishtp_loader_recv_msg(9), recv_fixed_cl_msg(9), fix_cl_hdr(9), ishtp_send_suspend(9), ishtp_send_resume(9), ishtp_query_subscribers(9)

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💀 reminder bestie: this page is from ./drivers/hid/intel-ish-hid/ishtp, dated October 2026, and it's the ishtp_hbm_cl_disconnect_req(9) page. Go forth and disconnect responsibly 😌✨