do_validate_mem(9)

💅 do_validate_mem(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes we're in kernel land today, and honestly? it's giving low-level icon energy. this page is all about do_validate_mem, which lowkey validates a memory region for PCMCIA use. no cap, that's the whole vibe.

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✨ NAME ✨

do_validate_mem — low level validate a memory region for PCMCIA use 🫶

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🌸 SYNOPSIS 🌸

int do_validate_mem (struct pcmcia_socket *s , unsigned long base ,
       unsigned long size , int (*validate)(struct pcmcia_socket *s, struct
       resource *res, unsigned int *value) );

like, that's the whole signature, and yes, that callback param is a whole mood (it's long, we respect it) 💀

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🎀 ARGUMENTS 🎀

• s — the PCMCIA socket you're validating, bestie. that's the main character.
• base — the start address of the resource to check. where it all begins ✨
• size — the size of the resource to check. how much of it we're looking at.
• validate — the validation function to use. the little helper that actually does the vibe check 👑

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💖 DESCRIPTION 💖

okay so here's the tea: do_validate_mem splits up the memory region that's being checked into two parts. both parts get passed to the validate function. 🦋

and then the check fails if any of these three things happen:

1. validate returns non-zero 😭
2. the value parameter passed to validate is zero
3. the value parameter is different between the two calls (like, inconsistent much? 🙈)

if it fails, it returns -EINVAL. else — and this is the slay part — it returns 0. periodt. 💅

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🔥 SEE ALSO 🔥

• kernel file ./drivers/pcmcia/rsrc_nonstatic.c — that's where the magic lives, iykyk
• do_mem_probe(9)
• inv_probe(9)
• validate_mem(9)
• validate_mem(9) — yes bestie, it's listed twice in the original and we are not erasing her, she's iconic ⭐
• pcmcia_nonstatic_validate_mem(9)

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🌈 a lil sign-off 🌈

this lil page lives under ./drivers/pcmcia, dated October 2026 — so like, future vibes but make it kernel. stay validating, bestie, and remember: two parts, one validate, zero drama unless value disagrees with itself 🧚💜

mwah 💋