From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfram Sang <wsa@the-dreams.de>
Subject: Re: [PATCH] Revert "i2c: designware: detect when dynamic tar update
 is possible"
Date: Tue, 14 Feb 2017 22:12:01 +0100
Message-ID: <20170214211201.ql4qbohj3xltma43@ninjato>
References: <20170213091819.4370-1-jarkko.nikula@linux.intel.com>
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To: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Cc: linux-i2c@vger.kernel.org, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Mika Westerberg <mika.westerberg@linux.intel.com>, Shah Nehal-Bakulchandra <Nehal-bakulchandra.Shah@amd.com>, Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>, Lucas De Marchi <lucas.demarchi@intel.com>, "# v4 . 9+" <stable@vger.kernel.org>


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On Mon, Feb 13, 2017 at 11:18:19AM +0200, Jarkko Nikula wrote:
> This reverts commit 63d0f0a6952a1a02bc4f116b7da7c7887e46efa3.
>=20
> It caused a regression on platforms where I2C controller is synthesized
> with dynamic TAR update disabled. Detection code is testing is bit
> DW_IC_CON_10BITADDR_MASTER in register DW_IC_CON read-only but fails to
> restore original value in case bit is read-write.
>=20
> Instead of fixing this we revert the commit since it was preparation for
> the commit 0317e6c0f1dc ("i2c: designware: do not disable adapter after
> transfer") which was also reverted.
>=20
> Reported-by: Shah Nehal-Bakulchandra <Nehal-bakulchandra.Shah@amd.com>
> Reported-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> Cc: Lucas De Marchi <lucas.demarchi@intel.com>
> Cc: <stable@vger.kernel.org> # v4.9+
> Fixes: 63d0f0a6952a ("i2c: designware: detect when dynamic tar update is =
possible")
> Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>

Applied to for-current, thanks!


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