Re: [PATCH v2 01/10] tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)

[Alexander Steffen]

On 25.06.2018 12:24, Jarkko Sakkinen wrote:
> On Wed, Jun 20, 2018 at 07:17:54AM +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_bus with the I2C_LOCK_SEGMENT flag. If the device does not
> > sit behind a mux-locked mux, the two locking variants are equivalent.
> >
> > Signed-off-by: Peter Rosin <peda@xxxxxxxxxx>
>
> Studied enough so that I can give
>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
>
> Do not have hardware to test this, however.

I don't have a mux-locked I2C mux either, but at least I can confirm 
that this change did not break my existing test setup (SLB9635/SLB9645 
on Raspberry Pi 2B).

Tested-by: Alexander Steffen <Alexander.Steffen@xxxxxxxxxxxx>

Alexander