compare_func 154 drivers/i2c/busses/i2c-iop3xx.c typedef int (* compare_func)(unsigned test, unsigned mask); compare_func 160 drivers/i2c/busses/i2c-iop3xx.c compare_func compare) compare_func 37 drivers/pnp/driver.c if (compare_func(pos->id, id) == 1)