From: Peter Rosin <peda@axentia.se>
To: Wolfram Sang <wsa@the-dreams.de>
Cc: <linux-kernel@vger.kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Peter Korsgaard <peter.korsgaard@barco.com>,
Guenter Roeck <linux@roeck-us.net>,
Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald <pmeerw@pmeerw.net>,
Antti Palosaari <crope@iki.fi>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Grant Likely <grant.likely@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Kalle Valo <kvalo@codeaurora.org>, Jiri Slaby <jslaby@suse.com>,
Daniel Baluta <daniel.baluta@intel.com>,
Lucas De Marchi <lucas.demarchi@intel.com>,
Adriana Reus <adriana.reus@intel.com>,
Matt Ranostay <matt.ranostay@intel.com>,
Krzysztof Kozlowski <k.kozlowski@samsung.com>,
Hans Verkuil <hans.verkuil@cisco.com>,
Terry Heo <terryheo@google.com>, Arnd Bergmann <arnd@arndb.de>,
Tommi Rantala <tt.rantala@gmail.com>,
Crestez Dan Leonard <leonard.crestez@intel.com>,
<linux-i2c@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-iio@vger.kernel.org>, <linux-media@vger.kernel.org>,
<devicetree@vger.kernel.org>, Peter Rosin <peda@lysator.liu.se>
Subject: Re: [PATCH v7 22/24] [media] rtl2832: change the i2c gate to be mux-locked
Date: Fri, 29 Apr 2016 06:41:01 +0200 [thread overview]
Message-ID: <4ae65dd6-1197-11d6-ef0a-714c0525cf3a@axentia.se> (raw)
In-Reply-To: <20160428214758.GA4531@katana>
On 2016-04-28 23:47, Wolfram Sang wrote:
> On Wed, Apr 20, 2016 at 05:18:02PM +0200, Peter Rosin wrote:
>> The root i2c adapter lock is then no longer held by the i2c mux during
>> accesses behind the i2c gate, and such accesses need to take that lock
>> just like any other ordinary i2c accesses do.
>>
>> So, declare the i2c gate mux-locked, and zap the regmap overrides
>> that makes the i2c accesses unlocked and use plain old regmap
>> accesses. This also removes the need for the regmap wrappers used by
>> rtl2832_sdr, so deconvolute the code further and provide the regmap
>> handle directly instead of the wrapper functions.
>>
>> Signed-off-by: Peter Rosin <peda@axentia.se>
> Antti, I'd need some tag from you since this is not the i2c realm.
>
Antti sent this:
https://lkml.org/lkml/2016/4/20/828
and I added a Tested-by in v8
https://github.com/peda-r/i2c-mux/commit/c023584d34db7aacbc59f28386378131cfa970d2
but the patch was never sent as an email, only as part of a pull request for
https://github.com/peda-r/i2c-mux/commits/mux-core-and-locking-8
So, I think all is ok, or do you need more than Tested-by?
Cheers,
Peter
next prev parent reply other threads:[~2016-04-29 4:41 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-20 15:17 [PATCH v7 00/24] i2c mux cleanup and locking update Peter Rosin
2016-04-20 15:17 ` [PATCH v7 01/24] i2c-mux: add common data for every i2c-mux instance Peter Rosin
2016-04-20 15:17 ` [PATCH v7 02/24] i2c: i2c-mux-gpio: convert to use an explicit i2c mux core Peter Rosin
2016-04-20 15:17 ` [PATCH v7 03/24] i2c: i2c-mux-pinctrl: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 04/24] i2c: i2c-arb-gpio-challenge: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 05/24] i2c: i2c-mux-pca9541: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 06/24] i2c: i2c-mux-pca954x: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 07/24] i2c: i2c-mux-reg: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 08/24] iio: imu: inv_mpu6050: " Peter Rosin
2016-04-22 11:37 ` [PATCH v8 " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 09/24] [media] m88ds3103: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 10/24] [media] rtl2830: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 11/24] [media] rtl2832: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 12/24] [media] si2168: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 13/24] [media] cx231xx: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 14/24] of/unittest: " Peter Rosin
2016-04-20 15:17 ` [PATCH v7 15/24] i2c-mux: drop old unused i2c-mux api Peter Rosin
2016-04-20 15:17 ` [PATCH v7 16/24] i2c: allow adapter drivers to override the adapter locking Peter Rosin
2016-04-28 20:50 ` Wolfram Sang
2016-04-28 21:08 ` Peter Rosin
2016-04-29 7:16 ` Wolfram Sang
2016-04-29 9:16 ` Peter Rosin
2016-05-02 19:20 ` Antti Palosaari
2016-05-03 21:39 ` Wolfram Sang
2016-05-04 14:10 ` Peter Rosin
2016-05-04 16:38 ` Wolfram Sang
2016-05-03 21:38 ` Wolfram Sang
2016-05-04 10:01 ` Peter Rosin
2016-05-04 12:07 ` Wolfram Sang
2016-04-20 15:17 ` [PATCH v7 17/24] i2c: muxes always lock the parent adapter Peter Rosin
2016-04-20 15:17 ` [PATCH v7 18/24] i2c-mux: relax locking of the top i2c adapter during mux-locked muxing Peter Rosin
2016-05-03 21:38 ` Wolfram Sang
2016-04-20 15:17 ` [PATCH v7 19/24] i2c-mux: document i2c muxes and elaborate on parent-/mux-locked muxes Peter Rosin
2016-04-20 15:18 ` [PATCH v7 20/24] iio: imu: inv_mpu6050: change the i2c gate to be mux-locked Peter Rosin
2016-04-20 15:18 ` [PATCH v7 21/24] [media] si2168: " Peter Rosin
2016-04-20 15:18 ` [PATCH v7 22/24] [media] rtl2832: " Peter Rosin
2016-04-28 21:47 ` Wolfram Sang
2016-04-29 4:41 ` Peter Rosin [this message]
2016-04-29 6:57 ` Wolfram Sang
2016-04-20 15:18 ` [PATCH v7 23/24] [media] rtl2832_sdr: get rid of empty regmap wrappers Peter Rosin
2016-04-20 15:18 ` [PATCH v7 24/24] [media] rtl2832: regmap is aware of lockdep, drop local locking hack Peter Rosin
2016-04-20 20:52 ` [PATCH v7 00/24] i2c mux cleanup and locking update Wolfram Sang
2016-04-21 1:10 ` Antti Palosaari
2016-04-21 12:33 ` Crestez Dan Leonard
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