hwmon: (pmbus/mpq8646) Gate the writes

The write cases of debugfs entries are provisioning and bench
helpers. By designs the MPQ8646 powers the CPU core rail,
so a wrong write can brown out the board or persist a bad
setpoint into finite-cycle NVM.
Said differently: some wrong register writes can and likely
will physically damage or destroy the chip and/or the board.

To be safe, it is disabled by default behind a
CONFIG_SENSORS_MPQ8646_DEBUG_UNSAFE and we print an explicit warning
banner at probe time when they are built in.

Signed-off-by: Vincent Jardin <vjardin@free.fr>
Link: https://lore.kernel.org/r/20260730-mpq8646_v0-v7-4-e7c7ad768d5d@free.fr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

0 files changed, 0 insertions, 0 deletions