nvec_write_async(9)

💌 nvec_write_async(9) — like, the Kernel API Manual page you actually want to read

okay so picture this: it's section 9 of the Kernel API Manual, the page is called nvec_write_async, and it's genuinely one of the most "fire and forget" little functions in the whole NVEC saga. bestie, let me tell you everything 💅

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✨ SYNOPSIS ✨

int nvec_write_async (struct nvec_chip *nvec , const unsigned char *data
, short size );

that's the whole signature, no notes, copy it exactly if you're typing it out 🫶

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🌸 ARGUMENTS 🌸

• nvec — an nvec_chip instance. like, the actual chip baby, the main character 👑
• data — the message data, and ngl the important bit: it starts with the request type, so don't go shuffling bytes around 🙈
• size — the size of data. just... how big it is. that's it, that's the vibe ⭐

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🦋 DESCRIPTION 🦋

so what does it DO? it queues a single message to be transferred to the embedded controller and then returns immediately. that's the "async" part, iykyk — you hand it off and you don't sit around waiting for the whole thing to land. queen behaviour, honestly ✨

queue it, dip out, let the transfer happen on its own time 💨

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💖 RETURN 💖

• 0 on success — slay 🎀
• a negative error code on failure — 😭

and lowkey important: if a failure occurred, the nvec driver may print an error. so if you see something in your logs, that might be why 👀

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🌈 SEE ALSO 🌈

the whole friend group, no gatekeeping:

• Kernel file ./drivers/staging/nvec/nvec.c
• enum nvec_msg_category(9)
• nvec_register_notifier(9)
• nvec_unregister_notifier(9)
• nvec_msg_alloc(9)
• nvec_msg_free(9)
• nvec_msg_is_event(9)
• nvec_msg_size(9)
• nvec_gpio_set_value(9)
• nvec_write_sync(9)
• nvec_toggle_global_events(9)
• nvec_event_mask(9)
• nvec_request_master(9)
• parse_msg(9)
• nvec_dispatch(9)
• nvec_tx_completed(9)
• nvec_rx_completed(9)
• nvec_invalid_flags(9)
• nvec_tx_set(9)
• tegra_i2c_writel(9)
• nvec_interrupt(9)

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and that's the page, bestie 🧚 this icon lives in ./drivers/staging/nvec, dated October 2026 — mwah, take care of her 💜