zpa2326_clear_fifo(9)

💅 zpa2326_clear_fifo(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the kernel, the manual is called Kernel API Manual, and the star of the show is a little function named zpa2326_clear_fifo. she's giving cleanup crew energy, and honestly? iconic. ✨

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🌸 NAME 🌸

zpa2326_clear_fifo — clear the remaining entries in the hardware FIFO. yeah. that's the whole gig. she empties out whatever's still sitting in there. 💅

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🎀 SYNOPSIS 🎀

int zpa2326_clear_fifo (const struct iio_dev *indio_dev , unsigned int
min_count );

literally just two args, no cap. 🫶

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🦋 ARGUMENTS 🦋

• indio_dev — the IIO device that's attached to the sampling hardware. your main character device, basically. 👑
• min_count — how many samples are currently hanging out inside the hardware FIFO. 🔥

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💖 DESCRIPTION 💖

so the min_count argument is a hint, meaning it's telling the function the known minimum number of samples that currently live in the FIFO right now. and why do we care? because it lets us cut down on bus accesses — we get to skip the status register read operation entirely, as long as we know for sure there are still entries left. it's giving efficiency, it's giving "why check when you already know." 💅✨

like, don't read the status register if you don't have to. she's busy. 🙈

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🌈 RETURN 🌈

Zero when it works out 💖 — and a negative error code otherwise. 😭 no in-between, that's just how she is.

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⭐ SEE ALSO ⭐

the whole friend group, fr fr — go look at these:

• Kernel file: ./drivers/iio/pressure/zpa2326.c
• ZPA2326 theory of operations(9)
• struct zpa2326_frequency(9)
• struct zpa2326_private(9)
• zpa2326_enable_device(9)
• zpa2326_sleep(9)
• zpa2326_reset_device(9)
• zpa2326_start_oneshot(9)
• zpa2326_power_on(9)
• zpa2326_power_off(9)
• zpa2326_config_oneshot(9)
• zpa2326_dequeue_pressure(9)
• zpa2326_fill_sample_buffer(9)
• zpa2326_resume(9)
• zpa2326_suspend(9)
• zpa2326_handle_irq(9)
• zpa2326_handle_threaded_irq(9)
• zpa2326_wait_oneshot_completion(9)
• zpa2326_poll_oneshot_completion(9)
• zpa2326_fetch_raw_sample(9)
• zpa2326_sample_oneshot(9)
• zpa2326_trigger_handler(9)
• zpa2326_preenable_buffer(9)
• zpa2326_postenable_buffer(9)
• zpa2326_set_trigger_state(9)
• zpa2326_init_managed_trigger(9)

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🫶 okay that's the whole page bestie, you're so ready. go clear that FIFO. periodt. 💜

sign-off szn 🌸 — this one lives in ./drivers/iio/pressure, dated October 2026, and it's the zpa2326_clear_fifo(9) page. mwah. 💋