ad7124_request_config_slot(9)

💅 ad7124_request_config_slot

okay so this is a page from the Kernel API Manual, and bestie, we're gonna get through it together — it's literally just about grabbing a config slot for the ad7124 driver and not being a chaos gremlin about it 🎀

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✨ NAME ✨

ad7124_request_config_slot — request a config slot for a given config 🌸

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🦋 SYNOPSIS 🦋

int ad7124_request_config_slot(struct ad7124_state *st, u8 channel);

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🎀 ARGUMENTS 🎀

• st — the driver instance, your main character struct 💖
• channel — the channel you're requesting a slot for, iykyk

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👑 DESCRIPTION 👑

So here's the vibe: this function tries to find a matching config that's already in use 🫶 — and if it can't find one, it goes looking for a free slot instead. Efficient queen behaviour, honestly.

If this function returns successfully, two things happen:

• the use count for the slot goes up ✨
• the slot number gets stored in cfg->cfg_slot 💾

⚠️ okay listen — the slot must be released again with ad7124_release_config_slot when it's no longer needed. Don't just ghost it, bestie 😭

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🌈 RETURN 🌈

• 0 — slay, a slot was successfully assigned 💅
• -EUSERS — no slot is available, it's giving sold out 💀
• or other error if SPI communication fails 🙈

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🔥 SEE ALSO 🔥

Kernel file ./drivers/iio/adc/ad7124.c ⭐

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and that's the whole page!! mwah 🧚💜 this came from the ./drivers/iio/adc corner of the kernel, October 2026, and honestly? iconic. periodt. 🌸💖✨