mei_io_cb_init(9)

💅 mei_io_cb_init — the Kernel API Manual moment

okay so bestie, welcome to mei_io_cb_init(9), a page from the Kernel API Manual, and honestly it's giving "small function, big responsibilities" energy. 🎀

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✨ NAME ✨

mei_io_cb_init — literally just allocate and initialize an io callback. that's the whole vibe. no cap.

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🌸 SYNOPSIS 🌸

struct mei_cl_cb * mei_io_cb_init (struct mei_cl *cl , enum mei_cb_file_ops type , const struct file *fp );

so you hand it a client, an op type and a file pointer, and it hands you back a struct mei_cl_cb *. iconic behavior honestly 🦋

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💖 ARGUMENTS 💖

• cl — the mei client. yes, that one. your main character 🌟
• type — the operation type, aka what kind of little errand we're running (it's an enum mei_cb_file_ops, iykyk).
• fp — pointer to the file structure. just a pointer, she's not taking ownership or anything, don't overthink it 🫶

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⭐ RETURN ⭐

a mei_cl_cb pointer, or NULL. that's it. that's the whole deal. if it's NULL, something went sideways and you should lowkey handle that 😭

fr fr check the return value. NULL is not a vibe.

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👑 SEE ALSO 👑

Kernel file ./drivers/misc/mei/client.c, plus a whole friend group of functions — like, the entire group chat got @'d here, so buckle up:

mei_me_cl_init(9), mei_me_cl_get(9), mei_me_cl_release(9), mei_me_cl_put(9), __mei_me_cl_del(9), mei_me_cl_del(9), mei_me_cl_add(9), __mei_me_cl_by_uuid(9), mei_me_cl_by_uuid(9), mei_me_cl_by_id(9), __mei_me_cl_by_uuid_id(9), mei_me_cl_by_uuid_id(9), mei_me_cl_rm_by_uuid(9), mei_me_cl_rm_all(9), mei_io_cb_free(9), mei_tx_cb_enqueue(9), mei_tx_cb_dequeue(9), mei_cl_set_read_by_fp(9), mei_io_list_flush_cl(9), mei_io_tx_list_free_cl(9), mei_io_rd_list_free_fp(9), mei_cl_free_pending(9), mei_cl_alloc_cb(9), mei_cl_enqueue_ctrl_wr_cb(9), mei_cl_read_cb(9), mei_cl_flush_queues(9), mei_cl_init(9), mei_cl_allocate(9), mei_cl_link(9), mei_cl_unlink(9), mei_hbuf_acquire(9), mei_cl_wake_all(9), mei_cl_set_disconnected(9), mei_cl_irq_disconnect(9), __mei_cl_disconnect(9), mei_cl_disconnect(9), mei_cl_is_other_connecting(9), mei_cl_send_connect(9), mei_cl_irq_connect(9), mei_cl_connect(9), mei_cl_alloc_linked(9), mei_cl_tx_flow_ctrl_creds(9), mei_cl_tx_flow_ctrl_creds_reduce(9), mei_cl_vtag_alloc(9), mei_cl_fp_by_vtag(9), mei_cl_reset_read_by_vtag(9), mei_cl_read_vtag_add_fc(9), mei_cl_vt_support_check(9), mei_cl_add_rd_completed(9), mei_cl_del_rd_completed(9), mei_cl_notify_fop2req(9), mei_cl_notify_req2fop(9), mei_cl_irq_notify(9), mei_cl_notify_request(9), mei_cl_notify(9), mei_cl_notify_get(9), mei_cl_read_start(9), mei_msg_hdr_init(9), mei_cl_irq_write(9), mei_cl_write(9), mei_cl_complete(9), mei_cl_all_disconnect(9), mei_cl_irq_dma_map(9), mei_cl_irq_dma_unmap(9), mei_cl_dma_alloc_and_map(9), mei_cl_dma_unmap(9)

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and that's the page, bestie 💜 this one lives in ./drivers/misc/mei and it's dated October 2026 — so yes, it's a future icon, we love that for her. slay. 🌈✨