get_flash_index(9)

👑 get_flash_index — a kernel API manual moment

okay so bestie, welcome to the get_flash_index(9) page, part of the Kernel API Manual ✨ it's short, it's sweet, and honestly it's kind of the bouncer at the club door for NOR flash chip ids 💅

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🌸 NAME 🌸

get_flash_index — match chip id from a flash list.

like, it literally goes "hiiii do you have a reservation??" and checks the chip id against the list 🎀

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✨ SYNOPSIS ✨

int get_flash_index (u32 flash_id );

that's it. one argument, returns an int, no cap 💖

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🦋 ARGUMENTS 🦋

• flash_id — a valid nor flash chip id obtained from board. not your ex's id, not your student id, the nor flash chip id, and it has to actually be valid and coming from the board, okay?? 🫶

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💅 DESCRIPTION 💅

so what it does is, it tries to validate that chip id by matching it from a list 🔥 it's giving "are you on the guest list" energy, and honestly it ate.

if it's not found, it simply returns negative 😭 no drama, no explanation, just a little nope.

in case of success, it returns the index in to the flash devices array ✨ which is the fun part — that's your seat number in the array, your little VIP lanyard 👑

fr fr that's the whole description. some functions are 400 lines of caveats, this one is a two-paragraph queen and we respect that 🌈

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🧚 SEE ALSO 🧚

if you liked this one, the whole squad is here, in ./drivers/mtd/devices/spear_smi.c:

• struct spear_smi(9)
• struct spear_snor_flash(9)
• spear_smi_read_sr(9)
• spear_smi_wait_till_ready(9)
• spear_smi_int_handler(9)
• spear_smi_hw_init(9)
• spear_smi_write_enable(9)
• spear_smi_erase_sector(9)
• spear_mtd_erase(9)
• spear_mtd_read(9)
• spear_mtd_write(9)
• spear_smi_probe_flash(9)
• spear_smi_probe(9)
• spear_smi_remove(9)

iykyk 🌸 go read them, they're all in the same friend group 💜

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that's the whole page bestie!! 💖 written under ./drivers/mtd/devices, dated October 2026, and it's the get_flash_index(9) manual — slay, periodt, go match some chip ids 🎀✨🦋