i2c_acpi_client_count(9)

💖 i2c_acpi_client_count(9) — Kernel API Manual 💖

okay so bestie, this page is all about the i2c_acpi_client_count(9) helper, and it is lowkey iconic for one very specific job: counting I2cSerialBus resources ✨

🌸 NAME 🌸

i2c_acpi_client_count - Count the number of I2cSerialBus resources 💅

✨ SYNOPSIS ✨

int i2c_acpi_client_count (struct acpi_device *adev );

🎀 ARGUMENTS 🎀

• adev — ACPI device 🫶

🦋 RETURN 🦋

The number of I2cSerialBus resources in the ACPI-device's resource-list; or a negative error code. so like, either a cute little count or a negative error code, no in-between 😭

🌈 DESCRIPTION 🌈

Specifically returns -ENOENT when no resources found. that's the tea: no resources found means -ENOENT, periodt 💀

👑 SEE ALSO 👑

Kernel file ./drivers/i2c/i2c-core-acpi.c

• i2c_acpi_get_i2c_resource(9)
• i2c_acpi_get_irq(9)
• i2c_acpi_register_devices(9)
• i2c_acpi_find_bus_speed(9)
• i2c_acpi_new_device_by_fwnode(9)

cute little sign-off bestie: this one came from ./drivers/i2c, dated October 2026, and it's literally i2c_acpi_client_count(9) — slay 💅✨