From: Lee Jones <lee.jones@linaro.org>
To: Peter Rosin <peda@axentia.se>
Cc: linux-kernel@vger.kernel.org, Peter Huewe <peterhuewe@gmx.de>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Brian Norris <computersforpeace@gmail.com>,
Gregory Fong <gregory.0xf0@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
bcm-kernel-feedback-list@broadcom.com,
Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>,
Haavard Skinnemoen <hskinnemoen@gmail.com>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang@linaro.org>,
Chunyan Zhang <zhang.lyra@gmail.com>,
Wolfram Sang <wsa@the-dreams.de>,
Guenter Roeck <linux@roeck-us.net>, Crt Mori <cmo@melexis.com>,
Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Antti Palosaari <crope@iki.fi>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Michael Krufky <mkrufky@linuxtv.org>,
linux-integrity@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-iio@vger.kernel.org,
linux-input@vger.kernel.org, linux-media@vger.kernel.org
Subject: Re: [PATCH v2 09/10] mfd: 88pm860x-i2c: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
Date: Wed, 4 Jul 2018 08:04:32 +0100 [thread overview]
Message-ID: <20180704070432.GF20176@dell> (raw)
In-Reply-To: <20180620051803.12206-10-peda@axentia.se>
On Wed, 20 Jun 2018, 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>
> ---
> drivers/mfd/88pm860x-i2c.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
If Wolfram is happy with this, then I am.
Since this file sees few changes - please merge through the I2C tree.
Acked-by: Lee Jones <lee.jones@linaro.org>
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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next prev parent reply other threads:[~2018-07-04 7:04 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
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 [this message]
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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