pacpi_mode_filter(9)

💅 pacpi_mode_filter(9) 💅

okay so welcome to the pacpi_mode_filter(9) page from the Kernel API Manual — it's the mode filter for ACPI, and it's lowkey iconic. 💖

🌸 NAME 🌸

pacpi_mode_filter — mode filter for ACPI. that's the name, bestie. 🎀

✨ SYNOPSIS ✨

unsigned int pacpi_mode_filter (struct ata_device *adev , unsigned int mask );

🫶 ARGUMENTS 🫶

• adev — device. yep, that's the whole vibe. 💖
• mask — mask of valid modes. it's giving "which modes are valid" energy. ✨

💅 DESCRIPTION 💅

This filters the valid mode list according to our own specific rules — in this case, the list of discovered valid modes obtained by ACPI probing. so it's doing a little vibe check on the mode list and applying those rules. no extra behavior invented, periodt. 🦋

🎀 SEE ALSO 🎀

go check out the kernel file ./drivers/ata/pata_acpi.c and these function besties:

• pacpi_pre_reset(9)
• pacpi_cable_detect(9)
• pacpi_discover_modes(9)
• pacpi_set_piomode(9)
• pacpi_set_dmamode(9)
• pacpi_qc_issue(9)
• pacpi_port_start(9)
• pacpi_init_one(9)

mwah 💋 that's the whole page, bestie — source/version: ./drivers/ata; date: October 2026. byeee! 💖