__devm_mux_state_get(9)

💅 __devm_mux_state_get(9) 💅

okay so bestie, this page is from the Kernel API Manual, and it's giving “resource-managed mux-state acquisition” energy. The star of the show is __devm_mux_state_get, and it's here to get the optional mux-state for a device, with resource management. No cap. 🦋

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✨ NAME ✨

__devm_mux_state_get — get the optional mux-state for a device, with resource management. 🎀

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🦋 SYNOPSIS 🦋

struct mux_state * __devm_mux_state_get (struct device *dev , const char
       *mux_name , bool optional , struct device_node *np , int (*init)(struct
       mux_state *mstate) , int (*exit)(struct mux_state *mstate) );

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🌸 ARGUMENTS 🌸

• dev — the device that needs a mux-state. 👑
• mux_name — the name identifying the mux-state. 🏷️
• optional — whether to return NULL and silence errors when the mux doesn't exist. 🙈
• np — the device nodes; if it's NULL, it uses dev->of_node. 🌳
• init — optional function pointer for mux-state object initialisation. 🛠️
• exit — optional function pointer for mux-state object cleanup on release. 🧹

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🔥 RETURN 🔥

On success you get a pointer to the mux-state. On error you get an ERR_PTR with a negative errno. Or, if optional is true and the mux doesn't exist, you get NULL. That's the whole return vibe. 💖

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🌈 SEE ALSO 🌈

the whole friend group is here:

• 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_state_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_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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xoxo, bestie — source/version ./drivers/mux, dated October 2026 💜