devm_of_dp_aux_populate_bus(9)

💅 devm_of_dp_aux_populate_bus(9)

okay so bestie, welcome to the Kernel API Manual page for devm_of_dp_aux_populate_bus — yes that name is a mouthful, no I will not be shortening it, we respect the function's government name here 🫶

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✨ NAME ✨

devm_of_dp_aux_populate_bus — the devm wrapper for of_dp_aux_populate_bus(). literally just the managed-lifecycle glow-up of its sibling, no cap 💅

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🌸 SYNOPSIS 🌸

int devm_of_dp_aux_populate_bus (struct drm_dp_aux *aux , int
(*done_probing)(struct drm_dp_aux *aux) );

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🎀 ARGUMENTS 🎀

• aux — the AUX channel whose device we want to populate. that's the one, that's the main character 🦋
• done_probing — callback function(s) to call after the EP device finishes probing. but bestie listen: it will not be called if there are no EP devices, and in that case this function returns -ENODEV. so don't be out here waiting for a callback that's never gonna text you back 😭

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💖 DESCRIPTION 💖

it handles freeing w/ devm on the device aux->dev. that's the whole vibe — the devm machinery does the cleanup so you don't have to, obsessed fr fr ✨

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🔥 RETURN 🔥

returns 0 if there's no error, or a negative error code if something went sideways. also returns -ENODEV if there are no children — and in that specific case the done_probing function won't be called. periodt. 👑

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🌈 SEE ALSO 🌈

kernel file ./drivers/gpu/drm/display/drm_dp_aux_bus.c

• dp_aux_ep_match(9)
• dp_aux_ep_probe(9)
• dp_aux_ep_remove(9)
• dp_aux_ep_shutdown(9)
• dp_aux_ep_dev_release(9)
• of_dp_aux_ep_destroy(9)
• of_dp_aux_depopulate_bus(9)
• of_dp_aux_populate_bus(9)

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ngl the whole friend group is linked above — if this page confused you, go read those and it'll click, iykyk 💜

and that's the page!! sourced from ./drivers/gpu/drm/display, dated October 2026, signed off by devm_of_dp_aux_populate_bus(9) herself — slay, go populate that bus bestie 🧚‍♀️⭐