STRUCT CDX_MCDI_CMD(9)

✨ NAME ✨

struct cdx_mcdi_cmd — an outstanding MCDI command. That’s the whole name, bestie. This page is from the Kernel API Manual, and the main character is literally struct cdx_mcdi_cmd(9). 💅

Vibe check: this struct is the little receipt for one outstanding MCDI command. No cap, every field is about to get its moment. 🫶

🌸 SYNOPSIS 🌸

Here’s the struct, character for character, exactly as it is:

       struct cdx_mcdi_cmd {
           struct kref ref;
           struct list_head list;
           struct list_head cleanup_list;
           struct work_struct work;
           struct cdx_mcdi_iface *mcdi;
           enum cdx_mcdi_cmd_state state;
           size_t inlen;
           const struct cdx_dword *inbuf;
           bool quiet;
           bool reboot_seen;
           u8 seq;
           unsigned long started;
           unsigned long cookie;
           cdx_mcdi_async_completer *completer;
           unsigned int handle;
           unsigned int cmd;
           int rc;
           size_t outlen;
           struct cdx_dword *outbuf;
        };

🫶 Members 🫶

Every member, every detail, nothing skipped:

• ref — Reference count. There will be one reference if the command is in the mcdi_iface cmd_list, another if it’s on a cleanup list, and a third if it’s queued in the work queue. Three possible refs, iykyk.
• list — The data for this entry in mcdi->cmd_list. That’s its spot in the list.
• cleanup_list — The data for this entry in a cleanup list. 🧹
• work — The work item for this command, queued in mcdi->workqueue. Work queue behavior, slay.
• mcdi — The mcdi_iface for this command. Its whole interface connection.
• state — The state of this command. Current status vibes.
• inlen — inbuf length. 📏
• inbuf — Input buffer. Where the input lives.
• quiet — Whether to silence errors. 🤫
• reboot_seen — Whether a reboot has been seen during this command, to prevent duplicates. Important: this is the duplicate-prevention flag.
• seq — Sequence number. 🔢
• started — Jiffies this command was started at. Timestamp energy, but in jiffies.
• cookie — Context for completion function. 🍪
• completer — Completion function. It completes things, periodt.
• handle — Command handle. 🎀
• cmd — Command number. Number time.
• rc — Return code. Classic rc.
• outlen — Length of output buffer. 📐
• outbuf — Output buffer. Where the output goes.

💖 SEE ALSO 💖

• Kernel file ./include/linux/cdx/mcdi.h
• enum cdx_mcdi_mode(9)
• enum cdx_mcdi_cmd_state(9)
• struct cdx_mcdi(9)
• struct cdx_mcdi_iface(9)
• struct cdx_mcdi_data(9)

Okay bye bestie — this page’s source/version is ./include/linux/cdx, dated October 2026. 💜🎀