DEVICE_QUIET(9)

📦 version 12.2, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 DEVICE_QUIET 💖

okay bestie, welcome to DEVICE_QUIET(9) from the Kernel Developer's Manual — this is the page about making devices stop yapping in your dmesg. yes, it's real, and yes, it's iconic.

✨ NAME ✨

device_quiet, device_verbose, device_is_quiet — manipulate device quiet flag 🎀

🌸 SYNOPSIS 🌸

#include <sys/param.h>
#include <sys/bus.h>

void
device_quiet(device_t dev);

void
device_verbose(device_t dev);

int
device_is_quiet(device_t dev);

like, copy that exactly, do not freestyle the includes, i am begging 🫶

🦋 DESCRIPTION 🦋

so. every single device has a quiet flag attached to it. that's the whole vibe. 💅

a device is verbose by default when it is created — main character energy, it wants to be seen, it wants to be heard — but you can quiet it, which prevents:

  • printing of the device identification string during attach, and
  • printing of a message during detach.

to quiet a device, call device_quiet() during a device driver probe routine. that's the moment, that's the window, that's when you do it. ✨

to re-enable probe messages, call device_verbose(). it's the undo button, it's giving second chances. 🙈

to test to see if a device is quieted, call device_is_quiet() — she will tell you the truth, no cap. 🔥

oh and heads up: devices are implicitly marked verbose after a driver detaches. so the quiet doesn't last forever, bestie. the system just does that on its own. periodt.

👑 SEE ALSO 👑

💜 AUTHORS 💜

this manual page was written by Doug Rabson. king behaviour honestly. 👑

that's the whole page, you ate it. this one came from the Debian crew and it's dated September 12, 2016 — old but still slaying fr fr 💖🌸✨

📦 where this page comes from