mipi_dsi_dcs...uffer_chatty(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 NAME 🎀

mipi_dsi_dcs_write_buffer_chatty — okay so this is literally mipi_dsi_dcs_write_buffer() but with an error log bolted on, bestie 💅

(this one lives in the Kernel API Manual, in case the vibe check needed a label ✨)

🦋 SYNOPSIS 🦋

int mipi_dsi_dcs_write_buffer_chatty (struct mipi_dsi_device *dsi ,
const void *data , size_t len );

🌸 ARGUMENTS 🌸

  • dsi — the DSI peripheral device, aka the main character of this whole operation 👑
  • data — the buffer holding the data you wanna transmit, like a little gift basket of bytes 🎁
  • len — the size of that transmission buffer, so nobody over-reads and embarrasses themselves 💀

✨ DESCRIPTION ✨

So it's basically mipi_dsi_dcs_write_buffer — same energy — but it comes with a dev_err call already baked in for you 🫶 like, you don't have to remember to log it yourself, it's giving "handled."

And bestie, hear me on this one: it returns 0 upon success, not the number of bytes sent. Yes, really. Different return contract than its sibling, no cap 😭

💖 RETURN 💖

0 on success, or a negative error code on failure. That's the whole thing. Slay. 🌈

⭐ SEE ALSO ⭐

Kernel file ./drivers/gpu/drm/drm_mipi_dsi.c — that's where the actual source lives, go look, iykyk 👀

And now the iconic supporting cast, all of them, no skipping, periodt:

ok that's the whole page, you read it, you understood it, you're basically a kernel dev now 🧚💜

sign-off time: this gorgeous little page comes from ./drivers/gpu/drm and it's dated October 2026 — so it's from the future, obviously, and it ate 💅🔥

📦 where this page comes from