linux-kernel - Re: [PATCH 00/21] i2c: make use of i2c_8bit_addr_from

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Date:   Mon, 14 May 2018 09:11:57 -0700
From:   Joe Perches <joe@...ches.com>
To:     Peter Rosin <peda@...ntia.se>, linux-kernel@...r.kernel.org
Cc:     Brendan Higgins <brendanhiggins@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Guenter Roeck <linux@...ck-us.net>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Peter Korsgaard <jacmet@...site.dk>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-i2c@...r.kernel.org, openbmc@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org
Subject: Re: [PATCH 00/21] i2c: make use of i2c_8bit_addr_from_msg

On Mon, 2018-05-14 at 16:53 +0200, Peter Rosin wrote:
> Hi!
> 
> The nice little inline i2c_8bit_addr_from_msg is not getting
> enough use. This series improves the situation and drops a
> bunch of lines in the process.

Perhaps the inline should test for I2C_M_REV_DIR_ADDR
as there is at least one use like

-               addr = msg->addr << 1;
-               if (flags & I2C_M_RD)
-                       addr |= 1;
+               addr = i2c_8bit_addr_from_msg(msg);
                if (flags & I2C_M_REV_DIR_ADDR)
                        addr ^= 1;

which look odd

Do any of these changes now no longer need
the temporary flags variable?