mei_hbm_cl_disconnect_req(9)

💅 mei_hbm_cl_disconnect_req(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's a little function from the MEI hbm corner of the kernel and it's honestly so straightforward you're gonna slay it. Let's go 🫶

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✨ NAME ✨

mei_hbm_cl_disconnect_req — sends disconnect message to fw. that's it, that's the whole vibe 💌

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✨ SYNOPSIS ✨

int mei_hbm_cl_disconnect_req (struct mei_device *dev , struct mei_cl
*cl );

like, one function, two args, no drama ✨

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✨ ARGUMENTS ✨

• dev — the device structure. your whole device situation, the main character of the operation 🔥
• cl — a client to disconnect from. the client we're breaking up with 💔 (respectfully)

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✨ RETURN ✨

-EIO on write failure 😭 — that's the only thing it reports back, so if the write goes sideways, that's your signal 🚩

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✨ SEE ALSO ✨

the kernel file lives at ./drivers/misc/mei/hbm.c — go read it, it's giving lore 👀 and here's the whole friend group:

• mei_cl_conn_status_to_errno(9)
• mei_hbm_write_message(9)
• mei_hbm_idle(9)
• mei_hbm_reset(9)
• mei_hbm_hdr(9)
• mei_hbm_cl_hdr(9)
• mei_hbm_cl_write(9)
• mei_hbm_cl_addr_equal(9)
• mei_hbm_cl_find_by_cmd(9)
• mei_hbm_start_wait(9)
• mei_hbm_start_req(9)
• mei_hbm_dma_setup_req(9)
• mei_hbm_capabilities_req(9)
• mei_hbm_enum_clients_req(9)
• mei_hbm_me_cl_add(9)
• mei_hbm_add_cl_resp(9)
• mei_hbm_fw_add_cl_req(9)
• mei_hbm_cl_notify_req(9)
• notify_res_to_fop(9)
• mei_hbm_cl_notify_start_res(9)
• mei_hbm_cl_notify_stop_res(9)
• mei_hbm_cl_notify(9)
• mei_hbm_cl_dma_map_req(9)
• mei_hbm_cl_dma_unmap_req(9)
• mei_hbm_prop_req(9)
• mei_hbm_pg(9)
• mei_hbm_stop_req(9)
• mei_hbm_cl_flow_control_req(9)
• mei_hbm_add_single_tx_flow_ctrl_creds(9)
• mei_hbm_cl_tx_flow_ctrl_creds_res(9)
• mei_hbm_cl_disconnect_rsp(9)
• mei_hbm_cl_disconnect_res(9)
• mei_hbm_cl_connect_req(9)
• mei_hbm_cl_connect_res(9)
• mei_hbm_cl_res(9)
• mei_hbm_fw_disconnect_req(9)
• mei_hbm_pg_enter_res(9)
• mei_hbm_pg_resume(9)
• mei_hbm_pg_exit_res(9)
• mei_hbm_config_features(9)
• mei_hbm_version_is_supported(9)
• mei_hbm_dispatch(9)

like, that's the entire ensemble cast, no cap 👑

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ngl the whole thing boils down to: you hand it the dev and the cl, it sends the disconnect message to fw, and if the write fails you get -EIO back. iconic, minimal, done 💅

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and that's the page bestie!! source lives at ./drivers/misc/mei, dated October 2026, part of the Kernel API Manual — tysm for reading, mwah 🎀💖✨🌸🦋