i2c_mark_adapter_suspended(9)

💤 i2c_mark_adapter_suspended(9) 💤

okay bestie, welcome to the Kernel API Manual ✨ — today's main character is i2c_mark_adapter_suspended(9), and honestly? she's a tiny function with big "don't talk to me, I'm asleep" energy 🦋

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🌸 NAME 🌸

i2c_mark_adapter_suspended — literally just reports the suspended state of the adapter up to the core, that's the whole vibe 🎀

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✨ SYNOPSIS ✨

void i2c_mark_adapter_suspended (struct i2c_adapter *adap );

no cap, that's the entire signature 💅

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🫶 ARGUMENTS 🫶

• adap — the adapter you're marking as suspended. that's her. she's going to sleep 😴

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🔥 DESCRIPTION 🔥

okay so here's the tea ☕ — when you use this helper to mark an adapter as suspended, the core will reject further transfers to this adapter. like, door's closed, transfers, go home 🙈

now, using this helper is optional but recommended for devices that have distinct handlers for system suspend and runtime suspend — if that's your device, this is giving exactly what you need 👑

and for the more complex devices out there? they're totally free to implement custom solutions to reject transfers when suspended. main character energy, do it your way 💜

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🦋 SEE ALSO 🦋

kernel file ./include/linux/i2c.h, plus the whole friend group:

• 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_lock_operations(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_resumed(9)
• i2c_check_quirks(9)
• module_i2c_driver(9)
• builtin_i2c_driver(9)

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quick reminder bestie: this one's a void — she returns nothing, she just does the thing and dips 💅

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and that's the whole page!! 🌈 this lil gem lives in ./include/linux, dated October 2026, and it's filed under i2c_mark_adapter_suspended(9) in the Kernel API Manual — go forth and suspend responsibly, ily, bye 🎀🦋💖