On Monday 14 March 2011, Waldemar.Rymarkiewicz@xxxxxxxxx wrote: > > > >If the usleep_range is trying to synchronize between the NFC > >and the I2C chip, you must wait for a notication from the NFC > >hardware that it's done. > > No, it's simply there as I have been faceing i2c write error while > I do two consecutive writes. > The second fails now and then. That's seems to be a chip issue. > I will try to investigate this issue. Ok. It sounds like a bug in the i2c driver, you should also take a look there. Maybe it has never had to deal with this much write data at once. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html