From mboxrd@z Thu Jan  1 00:00:00 1970
From: jarkko.sakkinen@linux.intel.com (Jarkko Sakkinen)
Date: Mon, 25 Jun 2018 13:24:54 +0300
Subject: [PATCH v2 01/10] tpm/tpm_i2c_infineon: switch to
 i2c_lock_bus(..., I2C_LOCK_SEGMENT)
In-Reply-To: <20180620051803.12206-2-peda@axentia.se>
References: <20180620051803.12206-1-peda@axentia.se>
 <20180620051803.12206-2-peda@axentia.se>
Message-ID: <20180625102454.GA3845@linux.intel.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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.

/Jarkko