v4l2_async_nf_init(9)

✨ v4l2_async_nf_init(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 this is the page for v4l2_async_nf_init, and honestly? it's giving "small function, big responsibility." let's get into it 🫶

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🎀 NAME 🎀

v4l2_async_nf_init — initialize a notifier, that's the whole vibe ✨

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🌸 SYNOPSIS 🌸

void v4l2_async_nf_init (struct v4l2_async_notifier *notifier , struct
v4l2_device *v4l2_dev );

like, that's it. two pointers, no return value, no drama 💅

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🦋 ARGUMENTS 🦋

• notifier — pointer to struct v4l2_async_notifier. this is the main character of the operation, bestie 👑
• v4l2_dev — pointer to struct v4l2_device. the supporting cast, but make no mistake, it's essential 🌟

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💜 DESCRIPTION 💜

so what does this function actually do? it initializes the notifier asc_entry. that's the whole thing. lowkey simple, highkey important 🔥

real talk though: you must call this before you add a subdevice to a notifier, using one of these three besties: - v4l2_async_nf_add_fwnode_remote - v4l2_async_nf_add_fwnode - v4l2_async_nf_add_i2c skip the init and you're gonna have a bad time, no cap 😭

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🧚 SEE ALSO 🧚

the kernel file ./include/media/v4l2-async.h, plus this whole friend group:

• enum v4l2_async_match_type(9)
• struct v4l2_async_match_desc(9)
• struct v4l2_async_connection(9)
• struct v4l2_async_notifier_operations(9)
• struct v4l2_async_notifier(9)
• struct v4l2_async_subdev_endpoint(9)
• v4l2_async_debug_init(9)
• v4l2_async_subdev_nf_init(9)
• v4l2_async_nf_add_fwnode(9)
• v4l2_async_nf_add_fwnode_remote(9)
• v4l2_async_nf_add_i2c(9)
• v4l2_async_subdev_endpoint_add(9)
• v4l2_async_connection_unique(9)
• v4l2_async_nf_register(9)
• v4l2_async_nf_unregister(9)
• v4l2_async_nf_cleanup(9)
• v4l2_async_register_subdev(9)
• v4l2_async_register_subdev_sensor(9)
• v4l2_async_unregister_subdev(9)

like, go read those too, they're all part of the same era 💫

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and that's the page!! mwah 💋 this one lives in ./include/media, dated October 2026, and it's the v4l2_async_nf_init(9) page from the Kernel API Manual. go forth and initialize your notifiers responsibly, bestie 🎀✨