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Date:   Thu, 6 Sep 2018 20:40:49 +0200
From:   Wolfram Sang <wsa@the-dreams.de>
To:     Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Cc:     Brendan Higgins <brendanhiggins@google.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Joel Stanley <joel@jms.id.au>,
        Andrew Jeffery <andrew@aj.id.au>, linux-i2c@vger.kernel.org,
        openbmc@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Jarkko Nikula <jarkko.nikula@linux.intel.com>,
        James Feist <james.feist@linux.intel.com>,
        Vernon Mauery <vernon.mauery@linux.intel.com>
Subject: Re: [PATCH i2c-next v6] i2c: aspeed: Handle master/slave combined
 irq events properly
Message-ID: <20180906184049.GF8607@kunai>
References: <20180823225731.19063-1-jae.hyun.yoo@linux.intel.com>
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On Thu, Aug 23, 2018 at 03:57:31PM -0700, Jae Hyun Yoo wrote:
> In most of cases, interrupt bits are set one by one but there are
> also a lot of other cases that Aspeed I2C IP sends multiple
> interrupt bits with combining master and slave events using a
> single interrupt call. It happens much more in multi-master
> environment than single-master. For an example, when master is
> waiting for a NORMAL_STOP interrupt in its MASTER_STOP state,
> SLAVE_MATCH and RX_DONE interrupts could come along with the
> NORMAL_STOP in case of an another master immediately sends data
> just after acquiring the bus. In this case, the NORMAL_STOP
> interrupt should be handled by master_irq and the SLAVE_MATCH and
> RX_DONE interrupts should be handled by slave_irq. This commit
> modifies irq hadling logic to handle the master/slave combined
> events properly.
>=20
> Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>

Applied to for-next, thanks!


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