ljca_register_event_cb(9)

💅 ljca_register_event_cb(9) — a whole Kernel API Manual page, bestie ✨

okay so picture this: you're out here in the kernel, right, and you want the ljca thingy to, like, tell you when stuff happens instead of you sitting there refreshing like a loser. That's literally what this page is about. The manual name is ljca_register_event_cb, and it's giving "let me hook you up with a callback." Iconic. 🎀

✨ NAME ✨

ljca_register_event_cb — register a callback function to receive events 🌸

🦋 SYNOPSIS 🦋

int ljca_register_event_cb (struct ljca_client *client , ljca_event_cb_t
event_cb , void *context );

💖 ARGUMENTS 💖

• client — the ljca client device, like, the actual thing you're signing up for event notifications 🫶
• event_cb — the callback function, aka the little guy who gets pinged every time an event shows up 👑
• context — the execution context of the event callback, so your callback knows where it's coming from, yk? 💫

🔥 RETURN 🔥

0 in case of success (slay 💅), negative value in case of error (not slay 😭).

ngl bestie, check that return value. 0 = you ate. Negative = the vibe check failed and you gotta handle it.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/usb/ljca.h 🧚 and also, like, the whole friend group:

• ljca_event_cb_t(9)
• struct ljca_client(9)
• struct ljca_gpio_info(9)
• struct ljca_i2c_info(9)
• struct ljca_spi_info(9)
• ljca_unregister_event_cb(9)
• ljca_transfer(9)
• ljca_transfer_noack(9)

ok that's the whole page, no cap 💜 this little beauty lives in ./include/linux/usb, the version vibes are October 2026, and it's brought to you by that same ./include/linux/usb energy at the bottom of the page. go forth and register those callbacks, main character 🦋✨