mbox_chan_txdone(9)

✨ mbox_chan_txdone ✨

okay bestie, so this is a function from the Kernel API Manual, and it's literally the "hey, I'm done!" notification for mailbox transmission. no cap. 💅

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📛 NAME 📛

mbox_chan_txdone — it's the way for a controller driver to tell the framework that the last TX has completed. like a little "k, sent it!" ping. 🫶

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🎀 SYNOPSIS 🎀

void mbox_chan_txdone (struct mbox_chan *chan , int r );

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🌸 ARGUMENTS 🌸

• chan — Pointer to the mailbox chan on which TX happened. like, which channel are we talking about here. 💖
• r — Status of the last TX — it's either OK or ERROR. that's the vibe check for your transmission. ✨

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🦋 DESCRIPTION 🦋

okay so picture this: the controller that has the IRQ for TX ACK calls this atomic API to tick the TX state machine forward. it's literally the heartbeat of your transmission flow. 💓

⚠️ but bestie, hear me — it works only if txdone_irq is set by the controller. no txdone_irq, no tick. periodt. 🔥

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/mailbox/mailbox.c
• mbox_chan_received_data(9) 💌
• mbox_client_txdone(9) 🎀
• mbox_client_peek_data(9) 👀
• mbox_chan_tx_slots_available(9) 🕳️
• mbox_send_message(9) 📨
• mbox_flush(9) 🚽
• mbox_bind_client(9) 🔗
• mbox_request_channel(9) 🙋‍♀️
• mbox_free_channel(9) 🕊️
• mbox_controller_register(9) 📝
• mbox_controller_unregister(9) ❌
• devm_mbox_controller_register(9) ✨

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and that's the whole tea, bestie!! 🍓 this page lives in ./drivers/mailbox and the version stamp says October 2026 — go off, king. 👑💜