From: Randy Dunlap <randy.dunlap@xxxxxxxxxx> i2c-core uses rt mutexes, so it needs to select that kconfig symbol since there is no prompt for it. ERROR: "rt_mutex_lock" [drivers/i2c/i2c-core.ko] undefined! ERROR: "__rt_mutex_init" [drivers/i2c/i2c-core.ko] undefined! ERROR: "rt_mutex_trylock" [drivers/i2c/i2c-core.ko] undefined! ERROR: "rt_mutex_unlock" [drivers/i2c/i2c-core.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx> --- drivers/i2c/Kconfig | 1 + 1 file changed, 1 insertion(+) --- linux-next-20090925.orig/drivers/i2c/Kconfig +++ linux-next-20090925/drivers/i2c/Kconfig @@ -5,6 +5,7 @@ menuconfig I2C tristate "I2C support" depends on HAS_IOMEM + select RT_MUTEXES ---help--- I2C (pronounce: I-square-C) is a slow serial bus protocol used in many micro controller applications and developed by Philips. SMBus, -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
