stm32_firewall_populate_bus(9)

💅 NAME 💅

okay so listen up bestie, stm32_firewall_populate_bus — literally what it says on the tin: it populates the device tree nodes that have a correct firewall configuration. and like, this is used at boot-time only, mmkay? it's a sanity check between the device tree and the firewalls' hardware configurations, and the whole point is to prevent a kernel crash when a device driver is not granted access. no cap, that's the vibe 🫶

✨ SYNOPSIS ✨

int stm32_firewall_populate_bus (struct stm32_firewall_controller
*firewall_controller );

🎀 ARGUMENTS 🎀

• firewall_controller — the firewall controller whose nodes will be populated or not. iconic parameter tbh 👑

🌸 DESCRIPTION 🌸

it returns 0 in case of success, or an appropriate errno code if an error occurred. that's it, that's the whole deal 💖

fr fr, if you get anything that isn't 0, something went sideways — check your errno bestie 😭

🦋 SEE ALSO 🦋

• Kernel file ./include/linux/bus/stm32_firewall.h
• STM32_PERIPHERAL_FIREWALL(9)
• struct stm32_firewall_controller(9)
• stm32_firewall_controller_register(9)
• stm32_firewall_controller_unregister(9)

✨💅 and that's a wrap! this lil page lives under ./include/linux/bus, it's the October 2026 edition, and yes it's still giving stm32_firewall_populate_bus(9) main character energy. slay, go populate those nodes bestie 🧚💜