2013/3/5 Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>: > The em2874 chips and upper have 2 buses. On all known devices, bus 0 is > currently used only by eeprom, and bus 1 for the rest. Add support to > register both buses. Did you add a mutex to ensure that both buses cannot be used at the same time? Because using the bus requires you to toggle a register (thus you cannot be using both busses at the same time), you cannot rely on the existing i2c adapter lock anymore. You don't want a situation where something is actively talking on bus 0, and then something else tries to talk on bus 1, flips the register bit and then the thread talking on bus 0 starts failing. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
