viortc_class_from_dev(9)

🌸 NAME

okay so bestie, this is viortc_class_from_dev from the Kernel API Manual — the function whose whole job is: get the RTC class object from a virtio device. it’s giving “small helper, big kernel energy”, and we’re obsessed. 💅✨

✨ SYNOPSIS

the signature is literally this, no cap:

struct viortc_class * viortc_class_from_dev (struct device *dev );

🫶 ARGUMENTS

• dev — virtio device. that’s the one and only argument, bestie. 🎀

💅 CONTEXT

Any context. that’s it, periodt — the page says any context, so that’s the vibe check. ✨

🌈 RETURN

RTC class object if available, ERR_PTR otherwise. no cap, that’s the whole return story. 💖

👑 SEE ALSO

okay the SEE ALSO section is huge and iconic, and every single reference is coming with us:

• Kernel file ./drivers/virtio/virtio_rtc_driver.c
• struct viortc_vq(9)
• struct viortc_dev(9)
• struct viortc_msg(9)
• viortc_alarms_supported(9)
• viortc_feed_vq(9)
• viortc_msg_init(9)
• viortc_msg_release(9)
• viortc_do_cb(9)
• viortc_requestq_hdlr(9)
• viortc_cb_requestq(9)
• viortc_alarmq_hdlr(9)
• viortc_cb_alarmq(9)
• viortc_get_resp_errno(9)
• viortc_msg_xfer(9)
• VIORTC_DECLARE_MSG_HDL_ONSTACK(9)
• VIORTC_MSG(9)
• VIORTC_MSG_INIT(9)
• VIORTC_MSG_WRITE(9)
• VIORTC_MSG_READ(9)
• viortc_read(9)
• viortc_read_cross(9)
• viortc_cfg(9)
• viortc_clock_cap(9)
• viortc_cross_cap(9)
• viortc_read_alarm(9)
• viortc_set_alarm(9)
• viortc_set_alarm_enabled(9)
• viortc_init_rtc_class_clock(9)
• viortc_init_ptp_clock(9)
• viortc_init_clock(9)
• viortc_clocks_deinit(9)
• viortc_clocks_init(9)
• viortc_populate_vq(9)
• viortc_alloc_vq_bufs(9)
• viortc_init_vqs(9)
• viortc_probe(9)
• viortc_remove(9)

and that’s the page, bestie! footer vibes are source/version ./drivers/virtio, date October 2026, page viortc_class_from_dev(9) — bye, go read the kernel docs responsibly 🫶💖