From: jarkko.sakkinen@linux.intel.com (Jarkko Sakkinen)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 01/10] tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
Date: Mon, 25 Jun 2018 13:24:54 +0300 [thread overview]
Message-ID: <20180625102454.GA3845@linux.intel.com> (raw)
In-Reply-To: <20180620051803.12206-2-peda@axentia.se>
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
next prev parent reply other threads:[~2018-06-25 10:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 5:17 [PATCH v2 00/10] Split i2c_lock_adapter into i2c_lock_root and i2c_lock_segment Peter Rosin
2018-06-20 5:17 ` [PATCH v2 01/10] tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) Peter Rosin
2018-06-25 10:24 ` Jarkko Sakkinen [this message]
2018-06-26 10:07 ` Alexander Steffen
2018-06-26 12:05 ` Jarkko Sakkinen
2018-06-26 12:07 ` Jarkko Sakkinen
2018-06-20 5:17 ` [PATCH v2 02/10] i2c: mux: pca9541: " Peter Rosin
2018-06-20 5:17 ` [PATCH v2 03/10] input: rohm_bu21023: " Peter Rosin
2018-06-20 20:28 ` Dmitry Torokhov
2018-06-20 5:17 ` [PATCH v2 04/10] media: af9013: " Peter Rosin
2018-06-20 5:17 ` [PATCH v2 05/10] media: drxk_hard: " Peter Rosin
2018-06-20 5:17 ` [PATCH v2 06/10] media: rtl2830: " Peter Rosin
2018-06-20 5:18 ` [PATCH v2 07/10] media: tda1004x: " Peter Rosin
2018-06-20 5:18 ` [PATCH v2 08/10] media: tda18271: " Peter Rosin
2018-06-20 5:18 ` [PATCH v2 09/10] mfd: 88pm860x-i2c: " Peter Rosin
2018-07-04 7:04 ` Lee Jones
2018-06-20 5:18 ` [PATCH v2 10/10] i2c: remove i2c_lock_adapter and use i2c_lock_bus directly Peter Rosin
2018-06-26 8:28 ` Jonathan Cameron
2018-06-26 14:09 ` Sekhar Nori
2018-06-26 2:37 ` [PATCH v2 00/10] Split i2c_lock_adapter into i2c_lock_root and i2c_lock_segment Wolfram Sang
2018-07-12 21:28 ` Wolfram Sang
2018-07-12 21:59 ` Mauro Carvalho Chehab
2018-07-12 22:11 ` Wolfram Sang
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