linux-kernel - RE: [PATCH v1 2/2] i2c: Introduce i2c_str_read

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Date:   Mon, 4 Jul 2022 10:15:48 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Andy Shevchenko' <andriy.shevchenko@...ux.intel.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Michael Walle <michael@...le.cc>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Sam Protsenko <semen.protsenko@...aro.org>,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>
CC:     Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        "Till Harbaum" <till@...baum.org>, Wolfram Sang <wsa@...nel.org>
Subject: RE: [PATCH v1 2/2] i2c: Introduce i2c_str_read_write() and make use
 of it

From: Andy Shevchenko
> Sent: 02 July 2022 14:59
> 
> str_read_write() returns a string literal "read" or "write" based
> on the value. It also allows to unify usage of a such in the kernel.
> 
> For i2c case introduce a wrapper that takes struct i2c_msg as parameter.
> 
...
> 
> -	DEB2("=== SLAVE ADDRESS %#04x+%c=%#04x\n",
> -	     msg->addr, msg->flags & I2C_M_RD ? 'R' : 'W', addr);
> +	DEB2("=== SLAVE ADDRESS %#04x+%s=%#04x\n", msg->addr, i2c_str_read_write(msg), addr);

You should ask yourself whether this actually makes the code more readable.
Imagine someone who is scan-reading the code to see what it does.
They're not going to be impressed when they've chased through
two searches to find out the code does.

	David

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