issei_cl_read_buf(9)

🌸 NAME 🌸

issei_cl_read_buf — process data from firmware. This is the issei_cl_read_buf(9) page from the Kernel API Manual, bestie, and it's literally here to help you handle firmware data 💖.

✨ SYNOPSIS ✨

okay so the signature is giving exactly this, no cap:

int issei_cl_read_buf (struct issei_device *idev , u16 fw_id , u16 host_id , u8 *buf , size_t buf_size );

🎀 ARGUMENTS 🎀

• struct issei_device *idev — the issei device, your main character here 👑
• u16 fw_id — firmware client id
• u16 host_id — host client id
• u8 *buf — buffer with data
• size_t buf_size — buffer size

💅 DESCRIPTION 💅

Puts data from firmware into provided host client storage. That's the whole assignment, bestie: firmware data goes into the host client storage you provided.

🫶 Free buffer or consume it. No leaving it hanging, okay?

🫶 RETURN 🫶

0 on success or recoverable error, <0 on unrecoverable error. So 0 is your "we're so back" result even when the error is recoverable, and <0 is the "unrecoverable, not slay" result 😭.

🦋 SEE ALSO 🦋

• Kernel file ./drivers/misc/issei/host_client.c — go peek, iykyk
• issei_cl_create(9)
• issei_cl_remove(9)
• issei_cl_connect(9)
• issei_cl_disconnect(9)
• issei_cl_all_disconnect(9)
• issei_cl_write(9)
• issei_cl_write_from_queue(9)
• issei_cl_read(9)
• issei_cl_check_read(9)
• issei_cl_check_write(9)

okay that's the whole vibe: source ./drivers/misc/issei, October 2026, page issei_cl_read_buf(9) — mwah 💋✨