STRUCT I2C_LOCK_OPERATIONS(9)

💅 struct i2c_lock_operations(9) — like, the I2C locking ops page, bestie

okay so this is a page from the Kernel API Manual, and it's literally about struct i2c_lock_operations — the little struct that represents I2C locking operations. yes queen, locking. we love a mutually-exclusive moment. 🔒✨

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🌸 NAME

struct i2c_lock_operations — represent I2C locking operations

like, it is the representation. it's giving "the vibe of locking, formalized in a struct." no cap.

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✨ SYNOPSIS

struct i2c_lock_operations {
    void (*lock_bus)(struct i2c_adapter *adapter, unsigned int flags);
    int (*trylock_bus)(struct i2c_adapter *adapter, unsigned int flags);
    void (*unlock_bus)(struct i2c_adapter *adapter, unsigned int flags);
 };

three function pointers, all with the same (struct i2c_adapter *adapter, unsigned int flags) energy. iconic symmetry tbh. 🫶

🎀 Members

• lock_bus — Get exclusive access to an I2C bus segment. it's the "mine now, back off" one. 🔥
• trylock_bus — Try to get exclusive access to an I2C bus segment. note the try — it's the polite version, the "if you're free…? no? okay bestie, no worries" one. 💅
• unlock_bus — Release exclusive access to an I2C bus segment. the letting-go arc. we stan a clean release. 🦋

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👑 Description

The main operations are wrapped by i2c_lock_bus and i2c_unlock_bus.

that's it, that's the description. short, sweet, main character energy. you don't go poking at these function pointers directly — the wrappers are the ones doing the actual handling, iykyk. ⭐

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💖 SEE ALSO

so many friends, fr fr. all of these live in the kernel file ./include/linux/i2c.h:

• i2c_master_recv(9)
• i2c_master_recv_dmasafe(9)
• i2c_master_send(9)
• i2c_master_send_dmasafe(9)
• struct i2c_device_identity(9)
• enum i2c_driver_flags(9)
• struct i2c_driver(9)
• struct i2c_client(9)
• struct i2c_board_info(9)
• I2C_BOARD_INFO(9)
• struct i2c_algorithm(9)
• struct i2c_timings(9)
• struct i2c_bus_recovery_info(9)
• struct i2c_adapter_quirks(9)
• i2c_lock_bus(9)
• i2c_trylock_bus(9)
• i2c_unlock_bus(9)
• i2c_mark_adapter_suspended(9)
• i2c_mark_adapter_resumed(9)
• i2c_check_quirks(9)
• module_i2c_driver(9)
• builtin_i2c_driver(9)

go read them, bestie. collect them all like Pokémon cards. 🌈

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reminder: this page lives under ./include/linux — that's the source, don't come for me.

okay that's the whole thing!! 🍓 sourced from ./include/linux, dated October 2026, and it's still struct i2c_lock_operations(9) — mwah, periodt. 💜🧚🌸