comedi_check...er_is_unique(9)

✨ comedi_check_trigger_is_unique — the Kernel API Manual moment 🎀

okay so bestie, picture this: you're deep in the kernel, you've got a trigger source situation, and you just need to know if it's unique or if it's doing the absolute most. That's this function. It lives in the Kernel API Manual, and it's here to do one (1) thing and do it well 💅

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✨ NAME ✨

comedi_check_trigger_is_unique — make sure a trigger source is unique, no cap 🌸

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🦋 SYNOPSIS 🦋

int comedi_check_trigger_is_unique (unsigned int src );

like, that's the whole vibe. one arg. very demure. very mindful 🫶

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💖 ARGUMENTS 💖

• src — the trigger source you want to check. that's it, that's the girlie ✨

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🔥 RETURN 🔥

• 0 — slay 💅 no more than one trigger source is set, so you're good.
• -EINVAL — uh oh 😭 more than one trigger source is set. that's a no from the kernel.

literally just those two outcomes. no hidden lore, no secret third thing 🙈

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🌈 SEE ALSO 🌈

the whole friend group, gathered for the group chat 💜 and yes, they all live in the kernel file ./include/linux/comedi/comedidev.h — go say hi:

• struct comedi_subdevice(9)
• struct comedi_buf_page(9)
• struct comedi_buf_map(9)
• struct comedi_async(9)
• enum comedi_cb(9)
• struct comedi_driver(9)
• struct comedi_device(9)
• struct comedi_lrange(9)
• comedi_range_is_bipolar(9)
• comedi_range_is_unipolar(9)
• comedi_range_is_external(9)
• comedi_chan_range_is_bipolar(9)
• comedi_chan_range_is_unipolar(9)
• comedi_chan_range_is_external(9)
• comedi_offset_munge(9)
• comedi_bytes_per_sample(9)
• comedi_sample_shift(9)
• comedi_bytes_to_samples(9)
• comedi_samples_to_bytes(9)
• comedi_check_trigger_src(9)
• comedi_check_trigger_arg_is(9)
• comedi_check_trigger_arg_min(9)
• comedi_check_trigger_arg_max(9)
• comedi_buf_n_bytes_ready(9)
• __comedi_request_region(9)
• comedi_request_region(9)
• module_comedi_driver(9)

like, twenty-seven icons in one list? we love a comprehensive moment 👑 iykyk ⭐

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💀 cute lil sign-off 💀

this page came to you from ./include/linux/comedi, dated October 2026 — bestie, that's the future, and this manpage is main character energy fr fr 💖✨🎀

periodt. now go check your trigger sources 🧚💜