ubi_dbg_is_ff(9)

ubi_dbg_is_ff(9) 💅

okay so hi bestie, welcome to the Kernel API Manual — this page is all about ubi_dbg_is_ff(9), a tiny UBI debug helper that’s basically doing a vibe check on whether a read region should be emulated as all 0xFF. No cap, that’s the whole plot 🎀.

✨ NAME ✨

ubi_dbg_is_ff — if it is time to emulate that read region is only 0xFF. 💖

🌸 SYNOPSIS 🌸

bool ubi_dbg_is_ff (const struct ubi_device *ubi , unsigned int caller
);

🦋 ARGUMENTS 🦋

• ubi — UBI device description object. That’s the main-character struct, periodt ✨.
• caller — -- undescribed -- (yep, the manual really said that; mysterious iconic behavior 🙈).

🔥 DESCRIPTION 🔥

Returns true if read region should be emulated 0xFF, otherwise returns false. That’s the entire serve, bestie: boolean, clean, no extra lore 💅.

🌈 SEE ALSO 🌈

Kernel file ./drivers/mtd/ubi/debug.h — go look, iykyk 👑

• ubi_dbg_is_power_cut(9)
• ubi_dbg_is_bitflip(9)
• ubi_dbg_is_write_failure(9)
• ubi_dbg_is_erase_failure(9)
• ubi_dbg_is_eccerr(9)
• ubi_dbg_is_read_failure(9)
• ubi_dbg_is_ff_bitflips(9)
• ubi_dbg_is_bad_hdr(9)
• ubi_dbg_is_bad_hdr_ebadmsg(9)
• ubi_dbg_is_bgt_disabled(9)

Source/version vibe: ./drivers/mtd/ubi 🫶 dated October 2026 ⭐ page ubi_dbg_is_ff(9) — mwah, bye bestie 💖