Messages in this thread | | | Subject | Re: [PATCH v2 01/10] tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) | From | Alexander Steffen <> | Date | Tue, 26 Jun 2018 12:07:21 +0200 |
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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@axentia.se> > > Studied enough so that I can give > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > 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@infineon.com>
Alexander
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