STRUCT MOST_DEV(9)

💖 struct most_dev(9) — the kernel API manual, bestie edition 🎀

okay so we're in struct most_dev(9) territory and honestly? this one's a whole vibe. it's the struct that holds all usb interface specific stuff ✨ like, every single usb-interface-specific little thing lives in here. no cap. 🫶

🌸 SYNOPSIS 🌸

here's the whole shape of it, bestie — copy-paste levels of exact:

struct most_dev {
    struct device dev;
    struct usb_device *usb_device;
    struct most_interface iface;
    struct most_channel_capability *cap;
    struct most_channel_config *conf;
    struct most_dci_obj *dci;
    u8 *ep_address;
    char description[MAX_STRING_LEN];
    char suffix[MAX_NUM_ENDPOINTS][MAX_SUFFIX_LEN];
    spinlock_t channel_lock[MAX_NUM_ENDPOINTS];
    bool padding_active[MAX_NUM_ENDPOINTS];
    bool is_channel_healthy[MAX_NUM_ENDPOINTS];
    struct clear_hold_work clear_work[MAX_NUM_ENDPOINTS];
    struct usb_anchor *busy_urbs;
    struct mutex io_mutex;
    struct timer_list link_stat_timer;
    struct work_struct poll_work_obj;
    void (*on_netinfo)(struct most_interface *most_iface, unsigned char link_state, unsigned char *addrs);
};

she's giving "long struct, big responsibility" and we stan 😌

✨ Members ✨

• usb_device — pointer to usb device 🔌 like, the actual device bestie
• iface — hardware interface 💅 the whole interface situation
• cap — channel capabilities 🌈 what each channel can do
• conf — channel configuration 🎀 how each channel is set up
• dci — direct communication interface of hardware 📡 (yes the hardware has a direct line, very main character)
• ep_address — endpoint address table 📋
• description — device description 📝 the literal description field, iconic
• suffix — suffix for channel name 🏷️
• channel_lock — synchronize channel access 🔒 pls don't touch the channel while someone else is using it, ty
• padding_active — indicates channel uses padding 🧷
• is_channel_healthy — health status table of each channel 🩺 a vibe check for every single channel, literally
• busy_urbs — list of anchored items ⚓ anchored, yes, as in usb_anchor
• io_mutex — synchronize I/O with disconnect 😭 (disconnect is always lurking, so we lock)
• link_stat_timer — timer for link status reports ⏰
• poll_work_obj — work for polling link status 🔁

ngl the [...] arrays are per-endpoint, so MAX_NUM_ENDPOINTS of everything. mind the arrays girlies 💀

🦋 SEE ALSO 🦋

• kernel file ./drivers/most/most_usb.c
• struct most_dci_obj(9)
• drci_rd_reg(9)
• drci_wr_reg(9)
• get_stream_frame_size(9)
• hdm_poison_channel(9)
• hdm_add_padding(9)
• hdm_remove_padding(9)
• hdm_write_completion(9)
• hdm_read_completion(9)
• hdm_enqueue(9)
• hdm_configure_channel(9)
• hdm_request_netinfo(9)
• link_stat_timer_handler(9)
• wq_netinfo(9)
• wq_clear_halt(9)
• hdm_probe(9)
• hdm_disconnect(9)

and that's the whole page, bestie 💜 it comes to you from ./drivers/most, dated October 2026, and it remains forever struct most_dev(9) at heart. slay, go forth and read your kernel structs 👑✨🌸