doc_write_page_ecc_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 doc_write_page_ecc_init(9) — the kernel API glow-up

okay bestie, so this is a page from the Kernel API Manual, and the star of the show is doc_write_page_ecc_init. She's a little function, she's got one job, and honestly? She eats. Let's get into it 🫶

✨ NAME ✨

doc_write_page_ecc_init — initialise the hardware BCH ECC engine 💖

Like, she wakes the engine up. She gets it dressed. She sends it out the door ready to compute. Iconic behaviour, no cap.

🌸 SYNOPSIS 🌸

int doc_write_page_ecc_init (struct docg3 *docg3 , int len );

Two arguments, one int coming back at you. Clean, simple, main character energy. ✨

🎀 ARGUMENTS 🎀

  • docg3 — the device 💻 (yes, literally just the device, that's her whole deal)
  • len — the number of bytes covered by the ECC (BCH covered). Lowkey important: this is how many bytes the BCH is actually responsible for. 🧚

🦋 DESCRIPTION 🦋

So what does she actually do? She initialises the hardware ECC engine to compute two things, and she's doing both of them, not picking favourites:

  • the Hamming ECC (on 1 byte) 🌈
  • the BCH hardware ECC (on 7 bytes) 🔥

Both. At once. Multitasking queen.

💀 and the return situation: returns 0 if it succeeded, and -EIO on error. That's it. No dramatic speech, no extra codes, just vibes and a failure mode.

💜 SEE ALSO 💜

okay this is the part where the whole friend group shows up, and there are so many of them. Family reunion time 🎉 — and also, the kernel file ./drivers/mtd/devices/docg3.c is where the magic lives, iykyk.

and that's the whole page, bestie 🍓 — brought to you by ./drivers/mtd/devices, dated October 2026, in the one and only Kernel API Manual. Go forth and initialise those ECC engines. periodt. 👑💅

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