linux-kernel - Re: [PATCH 2/5] I2C: Add helper macro for i2c

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Message-ID: <4EC4AE0B.1040500@kernel.org>
Date:	Thu, 17 Nov 2011 06:47:39 +0000
From:	Jonathan Cameron <jic23@...nel.org>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	Lars-Peter Clausen <lars@...afoo.de>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Jean Delvare <khali@...ux-fr.org>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-i2c@...r.kernel.org, spi-devel-general@...ts.sourceforge.net
Subject: Re: [PATCH 2/5] I2C: Add helper macro for i2c_driver boilerplate

On 11/16/2011 05:12 PM, Grant Likely wrote:
> On Wed, Nov 16, 2011 at 2:13 AM, Lars-Peter Clausen <lars@...afoo.de> wrote:
>> This patch introduces the module_i2c_driver macro which is a convenience macro
>> for I2C driver modules similar to module_platform_driver. It is intended to be
>> used by drivers which init/exit section does nothing but register/unregister
>> the I2C driver. By using this macro it is possible to eliminate a few lines of
>> boilerplate code per I2C driver.
>>
>> Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
> 
> Acked-by: Grant Likely <grant.likely@...retlab.ca>
Acked-by: Jonathan Cameron <jic23@....ac.uk>
> 
>> ---
>>  include/linux/i2c.h |   13 +++++++++++++
>>  1 files changed, 13 insertions(+), 0 deletions(-)
>>
>> diff --git a/include/linux/i2c.h b/include/linux/i2c.h
>> index a81bf6d..7e92854 100644
>> --- a/include/linux/i2c.h
>> +++ b/include/linux/i2c.h
>> @@ -485,6 +485,19 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap)
>>  {
>>        return adap->nr;
>>  }
>> +
>> +/**
>> + * module_i2c_driver() - Helper macro for registering a I2C driver
>> + * @__i2c_driver: i2c_driver struct
>> + *
>> + * Helper macro for I2C drivers which do not do anything special in module
>> + * init/exit. This eliminates a lot of boilerplate. Each module may only
>> + * use this macro once, and calling it replaces module_init() and module_exit()
>> + */
>> +#define module_i2c_driver(__i2c_driver) \
>> +       module_driver(__i2c_driver, i2c_add_driver, \
>> +                       i2c_del_driver)
>> +
>>  #endif /* I2C */
>>  #endif /* __KERNEL__ */
>>
>> --
>> 1.7.7.1
>>
>>
>>
> 
> 
> 

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