Hi Hans, On Thu, 16 Oct 2008 16:02:22 +0200, Hans de Goede wrote: > Jean Delvare wrote: > > As a side note, I wonder if it would make sense to have a separate lock > > for the watchdog struct members. fschmd_update_device() can hold > > data->update_lock for a significant amount of time, and you probably > > don(t want to delay watchdog_timer() too much. > > > > Hmm, question: can one do multiple i2c_smbus_read/write_byte_data() requests > and will the i2c core then do locking to serialize requests? Yes, i2c-core serializes transaction requests that go to each i2c adapter, using the i2c_adapter->bus_lock mutex. This can be seen in i2c-core.c, in functions i2c_smbus_xfer() and i2c_transfer(). -- Jean Delvare
