>Most serial drivers do this, see drivers/tty/serial for a >number of examples, or drivers/serial on older kernels. Thanks, will check it. >That would depend on your hardware. The only important part is >that you make sure you can send out data at any time. If >i2c_master_send() causes accesses to your buffer after >returning, there has to be an i2c method of making sure that >it has completed. > >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. >> What's more, I guess the i2c_master_send is a synchronous call and >> when it returnes we know it flushed data. Right? > >If i2c_master_send is synchronous, you might not need the >usleep_range() at all. Removing that call would be entirely reasonable. Will see how to approach that. /Waldek-- 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
