dvb_ca_en50221_write_data(9)

📦 version 7.3.1, in nixpkgs unstable

✨ dvb_ca_en50221_write_data(9) ✨

okay bestie, welcome to the kernel API manual for dvb_ca_en50221_write_data(9) 💅 this one lives in the Kernel API Manual and honestly? it's giving "the friend who actually knows how to talk to the CAM." 🎀

🌸 NAME 🌸

dvb_ca_en50221_write_data — this function talks to an EN50221 CAM control interface. It writes a buffer of data to a CAM. that's the whole vibe. it speaks CAM. no cap. 🔥

🦋 SYNOPSIS 🦋

int dvb_ca_en50221_write_data (struct dvb_ca_private *ca , int slot , u8
*buf , int bytes_write , int size_write_flag );

look at her. five args, one int coming back. iconic. ✨

💖 ARGUMENTS 💖

  • ca — your CA instance. the main character, literally. 👑
  • slot — the slot you're writing to. pick one, bestie. 🎯
  • buf — the data in this buffer is treated as a complete link-level packet to be written. like, the whole packet, not a fragment. fr fr. 📦
  • bytes_write — size of ebuf. yep, that's what it says, we don't question it. 🫶
  • size_write_flag — a flag on Command Register which says whether the link size information will be written or not. it's a yes-or-no girlie on the Command Register. 💅

⭐ RETURN ⭐

Number of bytes written, or < 0 on error. so if it comes back negative, that's your villain-origin moment 😭 — something went wrong.

🌈 SEE ALSO 🌈

the whole friend group, gathered for you 💜:

and that's the page, bestie 🫶 this little gem ships out of ./drivers/media/dvb-core, dated October 2026 — go be the main character of your own CAM interface, mwah 💋✨

📦 where this page comes from