Hi Mauro, On Mon, 25 Jun 2012 17:06:28 -0300, Mauro Carvalho Chehab wrote: > That's said, IMO, the best approach is to do: > > 1) add support for asynchronous probe at device core, for devices that requires firmware > at probe(). The async_probe() will only be active if !usermodehelper_disabled. > > 2) export the I2C i2c_lock_adapter()/i2c_unlock_adapter() interface. Both functions are already exported since kernel 2.6.32. However these functions were originally made public for the shared pin case, where two pins can be used for either I2C or something else, and we have to prevent I2C usage when the other function is used. This does not help in your case. What you need additionally is that unlocked flavors of some i2c transfer functions (at least i2c_transfer itself) are exported as well. This isn't necessarily trivial though, as the locking and unlocking are taking place inside i2c_transfer(), not at its boundaries. I'm looking into this now. -- Jean Delvare -- 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
