nx842_OF_upd_maxsyncop(9)

🌸 nx842_OF_upd_maxsyncop(9) — Kernel API Manual energy ✨

okay so bestie, this is the page for nx842_OF_upd_maxsyncop(9) from the Kernel API Manual, and it's literally about updating device info from the OF maxsyncop property. No cap, it's a tiny little handler and we're gonna go through every crumb. 🍓

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💖 NAME 💖

• nx842_OF_upd_maxsyncop — the one-liner says: nx842_OF_upd_maxsyncop - - Update the device info from OF maxsyncop prop

✨ SYNOPSIS ✨

int nx842_OF_upd_maxsyncop (struct nx842_devdata *devdata , struct
       property *prop );

🎀 ARGUMENTS 🎀

• devdata — a struct nx842_devdata that you're updating. That's the thing getting the glow-up. 💅
• prop — a struct property point containing the maxsyncop for the update. (Yes, it says “point” — we're keeping the lore fr fr.) 🫶

🦋 DESCRIPTION 🦋

okay so here's the definition of the 'ibm,max-sync-cop' OF property: it's two series of cells. The first series of cells represents the maximums that can be synchronously compressed. The second series of cells represents the maximums that can be synchronously decompressed. Slay. ✨

1. The first cell in each series contains the count of the number of data length, scatter list elements pairs that follow — each being of the form:
   • a. One cell data byte length
   • b. One cell total number of scatter list elements

🌈 EXAMPLE 🌈

# od -x ibm,max-sync-cop 0000000 0000 0001 0000 1000 0000 01fe 0000 0001
0000020 0000 1000 0000 01fe

In this example, compression supports 0x1000 (4,096) data byte length and 0x1fe (510) total scatter list elements. Decompression supports 0x1000 (4,096) data byte length and 0x1f3 (510) total scatter list elements. iconic numbers, no notes 💫

⭐ RETURN ⭐

• 0 on success
• -EINVAL on failure

🔥 SEE ALSO 🔥

• Kernel file ./drivers/crypto/nx/nx-common-pseries.c
• nx842_pseries_compress(9)
• nx842_pseries_decompress(9)
• nx842_OF_set_defaults(9)
• nx842_OF_upd_status(9)
• nx842_OF_upd_maxsglen(9)
• nx842_OF_upd(9)
• nx842_OF_notifier(9)

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okay bestie that's the whole page. It's from ./drivers/crypto/nx, dated October 2026, and the page is nx842_OF_upd_maxsyncop(9). mwah 💋✨