linux-kernel - Re: [PATCH v2] i2c: designware: Get right data length

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Message-ID: <20210226103057.GD1014@ninjato>
Date:   Fri, 26 Feb 2021 11:30:57 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Liguang Zhang <zhangliguang@...ux.alibaba.com>
Cc:     Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] i2c: designware: Get right data length

On Thu, Feb 25, 2021 at 10:26:31PM +0800, Liguang Zhang wrote:
> IC_DATA_CMD[11] indicates the first data byte received after the address
> phase for receive transfer in Master receiver or Slave receiver mode,
> this bit was set in some transfer flow. IC_DATA_CMD[7:0] contains the
> data to be transmitted or received on the I2C bus, so we should use the
> lower 8 bits to get the real data length.
> 
> Signed-off-by: Liguang Zhang <zhangliguang@...ux.alibaba.com>

Applied to for-current, thanks!


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