pci_write_rom(9)

💖 pci_write_rom(9) — Kernel API Manual 💖

okay bestie, this is pci_write_rom(9) from the Kernel API Manual, and it's literally the sysfs write hook for the PCI ROM display vibes. Let's get into it ✨

🌸 NAME 🌸

pci_write_rom — used to enable access to the PCI ROM display 🫶

✨ SYNOPSIS ✨

       ssize_t pci_write_rom (struct file *filp , struct kobject *kobj , const
       struct bin_attribute *bin_attr , char *buf , loff_t off , size_t count
       );

🎀 ARGUMENTS 🎀

• filp — the sysfs file, iconic honestly
• kobj — kernel object handle ✨
• bin_attr — the struct bin_attribute for this file 🎀
• buf — user input, no cap
• off — file offset 💅
• count — number of byte in input 🌸

🦋 DESCRIPTION 🦋

Writing a boolean value enables or disables the ROM display. That's the whole plot, bestie — boolean in, ROM display on or off 🔥

💅 SEE ALSO 💅

Kernel file ./drivers/pci/pci-sysfs.c, plus the whole bestie lineup: pci_read_legacy_io(9), pci_write_legacy_io(9), pci_mmap_legacy_mem(9), pci_mmap_legacy_io(9), pci_mmap_resource(9), and pci_read_rom(9) 🌈

mwah 💋 — source/version ./drivers/pci, dated October 2026, and yeah, it's still pci_write_rom(9) 💜