powernv_flash_read(9)

🌸 powernv_flash_read 💅

okay so bestie, welcome to the Kernel API Manual — yes that's the manual name, we're in the kernel docs now, put your big-girl hat on 🎀

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✨ NAME ✨

powernv_flash_read —

and that's it. that's the whole name line. no description, no little tagline, just the function name and a lonely little dash. honestly? minimalism. we respect it 🙈 (fr fr, there's nothing else in the original NAME section, i'm not hiding anything from you)

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🦋 SYNOPSIS 🦋

int powernv_flash_read (struct mtd_info *mtd , loff_t from , size_t len
, size_t *retlen , u_char *buf );

like, the whole thing. she takes five arguments. she returns an int. she's booked and busy 💅

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🍓 ARGUMENTS 🍓

the cast of characters, in order, no cap:

• mtd — the device. that's it. that's the whole description. the device. your main character 🫶
• from — the offset you're reading from, iykyk, this is where you start
• len — how many bytes you want to read (the dream)
• retlen — how many bytes you actually read (the reality 😭) — it's a pointer to a size_t, so the function can hand the real number back to you
• buf — the buffer that gets filled in. you bring the empty container, she brings the data ✨

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🔥 DESCRIPTION 🔥

returns 0 if the read was successful, or -ERRNO if an error occurred. that's the vibe check. zero means slay, negative errno means something went sideways and you should go look up what that errno means 💀

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👑 SEE ALSO 👑

• the kernel file ./drivers/mtd/devices/powernv_flash.c — go read it, it's giving source of truth 🧚
• powernv_flash_write(9) — the sibling that writes
• powernv_flash_erase(9) — the one that erases
• powernv_flash_set_driver_info(9) — the one that sets the driver info
• powernv_flash_probe(9) — the one that probes

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okay that's the whole page, you ate that 💖 and for the cute little sign-off: this iconic piece of documentation lives at ./drivers/mtd/devices, dated October 2026, and it's filed under powernv_flash_read(9). periodt 🌈⭐