ctucan_read_fault_state(9)

💅 ctucan_read_fault_state — the kernel API manual, but make it cute

okay so bestie, welcome to ctucan_read_fault_state(9) from the Kernel API Manual ✨ this one is short and sweet and honestly kind of iconic for it.

---

🌸 NAME 🌸

ctucan_read_fault_state — literally just reads the CTU CAN FD's fault confinement state. that's the whole job. she's a one-trick pony and she ate 💅

---

✨ SYNOPSIS ✨

enum can_state ctucan_read_fault_state (struct ctucan_priv *priv );

so you call her, you hand her a priv, and she hands you back an enum can_state. no cap, that's it 🎀

---

🦋 ARGUMENTS 🦋

• priv — pointer to private data 🫶 like, the controller's personal little diary of internals. hand it over, she knows what to do with it.

---

👑 RETURN 👑

she returns the fault confinement state of the controller ⭐ that's the vibe check result for your CAN controller's error situation, shipped straight back to you as an enum can_state. periodt.

---

🌈 SEE ALSO 🌈

if you're nosy (respectfully 💖), the kernel file lives at ./drivers/net/can/ctucanfd/ctucanfd_base.c — go read the source, it's giving main character energy.

and here's the whole friend group, all the sibling functions you can also call on (9):

• ctucan_state_to_str(9)
• ctucan_reset(9)
• ctucan_set_btr(9)
• ctucan_set_bittiming(9)
• ctucan_set_data_bittiming(9)
• ctucan_set_secondary_sample_point(9)
• ctucan_set_mode(9)
• ctucan_chip_start(9)
• ctucan_do_set_mode(9)
• ctucan_get_tx_status(9)
• ctucan_is_txt_buf_writable(9)
• ctucan_insert_frame(9)
• ctucan_give_txtb_cmd(9)
• ctucan_start_xmit(9)
• ctucan_read_rx_frame(9)
• ctucan_rx(9)
• ctucan_get_rec_tec(9)
• ctucan_err_interrupt(9)
• ctucan_rx_poll(9)
• ctucan_rotate_txb_prio(9)
• ctucan_tx_interrupt(9)
• ctucan_interrupt(9)
• ctucan_chip_stop(9)
• ctucan_open(9)
• ctucan_close(9)
• ctucan_get_berr_counter(9)

---

ngl the whole squad is listed above, so if this one didn't scratch the itch, one of her 26 besties definitely will 😭💜

---

and that's the page, bestie 🍓 this gem comes to you from ./drivers/net/can/ctucanfd, dated October 2026 — screenshot it, frame it, put it on your fridge, mwah 💋🧚‍♀️