linux-kernel - Re: [PATCH 01/11] i2c: add helpers for locking the I2C segment

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Date:   Mon, 18 Jun 2018 20:05:03 +0900
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Peter Rosin <peda@...ntia.se>
Cc:     linux-kernel@...r.kernel.org, Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Brian Norris <computersforpeace@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        Haavard Skinnemoen <hskinnemoen@...il.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang@...aro.org>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Guenter Roeck <linux@...ck-us.net>, Crt Mori <cmo@...exis.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Antti Palosaari <crope@....fi>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Michael Krufky <mkrufky@...uxtv.org>,
        Lee Jones <lee.jones@...aro.org>,
        linux-integrity@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-iio@...r.kernel.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: Re: [PATCH 01/11] i2c: add helpers for locking the I2C segment


> +static inline void
> +i2c_lock_segment(struct i2c_adapter *adapter)
> +{
> +	i2c_lock_bus(adapter, I2C_LOCK_SEGMENT);
> +}
> +
> +static inline int
> +i2c_trylock_segment(struct i2c_adapter *adapter)
> +{
> +	return i2c_trylock_bus(adapter, I2C_LOCK_SEGMENT);
> +}
> +
> +static inline void
> +i2c_unlock_segment(struct i2c_adapter *adapter)
> +{
> +	i2c_unlock_bus(adapter, I2C_LOCK_SEGMENT);
> +}

I wonder if i2c_lock_segment() and i2c_lock_root_adapter() are really
more readable and convenient than i2c_lock_bus() with the flag. I think
the flags have speaking names, too.

Is that an idea to remove these functions altogether and start using
i2c_lock_bus()?


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