On 2018-06-19 14:56, Jarkko Sakkinen wrote: > On Fri, Jun 15, 2018 at 12:14:57PM +0200, Peter Rosin wrote: >> Locking the root adapter for __i2c_transfer will deadlock if the >> device sits behind a mux-locked I2C mux. Switch to the finer-grained >> i2c_lock_segment. If the device does not sit behind a mux-locked mux, >> the two locking variants are equivalent. >> >> Signed-off-by: Peter Rosin <peda@xxxxxxxxxx> > > Can you quickly explain (or give a reference) the difference with these > functions? Not an expert in this area. Thanks. There are some words in the cover letter. If you need more, there's always Documentation/i2c/i2c-topology. Hope that helps, otherwise I'll try to explain better... Cheers, Peter
