devm_iio_ba...get_by_index(9)

💅 NAME

devm_iio_backend_get_by_index — the device-managed way to grab a backend device by its index, bestie ✨

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🎀 SYNOPSIS

struct iio_backend * devm_iio_backend_get_by_index (struct device *dev ,
unsigned int index );

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🌸 ARGUMENTS

• dev — the consumer device that's gonna be using the backend, aka the one doing the asking 🫶
• index — which backend you want, based on its position in the io-backends property (yes, the ordering in that property is literally the whole vibe check here) 🔢

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🦋 DESCRIPTION

Okay so here's the tea: this function gets you the backend at index that's associated with dev. That's it, that's the whole thing. It's giving "just hand me the backend, please" energy 💖

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⭐ RETURN

You get a backend pointer back, slay 👑 — but if it goes wrong, you get a negative error pointer instead. So like, do the IS_ERR() thing, no cap, don't just rawdog that pointer 😭

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🔥 SEE ALSO

The kernel file lives right here: ./drivers/iio/industrialio-backend.c 📁

And the whole friend group, in order:

• iio_backend_debugfs_add(9)
• iio_backend_debugfs_print_chan_status(9)
• iio_backend_chan_enable(9)
• iio_backend_chan_disable(9)
• iio_backend_disable(9)
• iio_backend_enable(9)
• devm_iio_backend_enable(9)
• iio_backend_data_format_set(9)
• iio_backend_data_source_set(9)
• iio_backend_data_source_get(9)
• iio_backend_set_sampling_freq(9)
• iio_backend_test_pattern_set(9)
• iio_backend_chan_status(9)
• iio_backend_iodelay_set(9)
• iio_backend_data_sample_trigger(9)
• devm_iio_backend_request_buffer(9)
• iio_backend_read_raw(9)
• iio_backend_ext_info_get(9)
• iio_backend_ext_info_set(9)
• iio_backend_interface_type_get(9)
• iio_backend_data_size_set(9)
• iio_backend_oversampling_ratio_set(9)
• iio_backend_extend_chan_spec(9)
• iio_backend_has_caps(9)
• iio_backend_filter_type_set(9)
• iio_backend_interface_data_align(9)
• iio_backend_num_lanes_set(9)
• iio_backend_ddr_enable(9)
• iio_backend_ddr_disable(9)
• iio_backend_data_stream_enable(9)
• iio_backend_data_stream_disable(9)
• iio_backend_data_transfer_addr(9)
• devm_iio_backend_get(9)
• devm_iio_backend_fwnode_get(9)
• __devm_iio_backend_get_from_fwnode_lookup(9)
• iio_backend_get_priv(9)
• devm_iio_backend_register(9)

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ngl the whole squad is in that list and you should absolutely go read them, they're iconic 🧚

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Okay that's the page!! This one came from ./drivers/iio, dated October 2026, and it's the man page for devm_iio_ba...get_by_index(9) (yes the title gets truncated in the header, it's giving budget cuts 💀). Bye bestie, go get that backend! 🌈💜