mux_state_select_delay(9)

💅 mux_state_select_delay 💅

okay so this is a page straight out of the Kernel API Manual — it's mux_state_select_delay(9) and it's literally about picking a mux state and then waiting a lil bit. bestie, let's get into it 🎀

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✨ NAME ✨

mux_state_select_delay — select the given multiplexer state. that's it, that's the vibe 🦋

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🌸 SYNOPSIS 🌸

int mux_state_select_delay (struct mux_state *mstate , unsigned int
delay_us );

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🧚 ARGUMENTS 🧚

• mstate — the mux-state you're trying to select, like the outfit you've decided on 💅
• delay_us — the time to delay, in microseconds, if the mux state actually changed. no change, no wait, no drama ✨

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🔥 DESCRIPTION 🔥

so when you successfully select the mux-state, its mux-control gets locked — and it stays locked until somebody calls mux_state_deselect. no cap, it's held hostage (lovingly) 🫶

and if the mux-control is already selected when mux_state_select is called, the caller will be blocked until mux_state_deselect or mux_control_deselect gets called — by someone else, obvi 🙈

so like, please make sure to call mux_state_deselect when the operation is complete and the mux-control is free for others to use. but do not call mux_state_deselect if mux_state_select fails. that's the one rule, don't fumble it 😭

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⭐ RETURN ⭐

0 when the mux-state has been selected ✨ — or a negative errno on error 💀

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👑 SEE ALSO 👑

the whole friend group, fr fr:

• Kernel file ./drivers/mux/core.c
• struct mux_state(9)
• struct devm_mux_state_state(9)
• mux_chip_alloc(9)
• mux_chip_register(9)
• mux_chip_unregister(9)
• mux_chip_free(9)
• devm_mux_chip_alloc(9)
• devm_mux_chip_register(9)
• mux_control_states(9)
• mux_control_select_delay(9)
• mux_control_try_select_delay(9)
• mux_state_try_select_delay(9)
• mux_control_deselect(9)
• mux_state_deselect(9)
• mux_get(9)
• mux_control_get(9)
• mux_control_get_optional(9)
• mux_control_put(9)
• devm_mux_control_get(9)
• mux_state_get(9)
• __devm_mux_state_get(9)
• devm_mux_state_get_from_np(9)
• devm_mux_state_get_optional(9)
• devm_mux_state_get_selected(9)
• devm_mux_state_get_optional_selected(9)

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and that's the whole page, bestie 🌈💖 this iconic lil entry lives in ./drivers/mux, dated October 2026, and it's filed under mux_state_select_delay(9) — go forth and select responsibly 🧚‍♀️✨🦋