i2c_acpi_find_bus_speed 335 drivers/i2c/i2c-core-acpi.c u32 i2c_acpi_find_bus_speed(struct device *dev) i2c_acpi_find_bus_speed 993 include/linux/i2c.h static inline u32 i2c_acpi_find_bus_speed(struct device *dev)