Subject: Re: [PATCH -next] extcon: fix extcon-sm5502 build when CONFIG_I2C=m

From: Randy Dunlap <[email-masked]>
Date: Fri, 15 Aug 2014 16:36:08 -0700

On 08/13/14 00:40, Chanwoo Choi wrote:
> Dear Randy,
> 
> Thanks for your report.
> 
> I catched this issue. So, I fix this bug already. You can check it on following url:
> - http://git.kernel.org/cgit/linux/kernel/git/chanwoo/extcon.git/commit/?h=extcon-test&id=5e519b04db6c5b42f8d8ee246c16903c130b5fd5
> 

linux-next of 20140815 still has this build error.
Please get this patch into linux-next.

Thanks.

> 
> Best Regards,
> Chanwoo Choi
> 
> On 08/13/2014 04:22 PM, Randy Dunlap wrote:
>> From: Randy Dunlap <[email-masked]>
>>
>> Fix build errors in extcon-sm5502.c by making EXTCON_SM5502 depend
>> on I2C since it selects REGMAP_I2C.  The build errors happen when
>> CONFIG_I2C=m and CONFIG_EXTCON_SM5502=y. This Kconfig change causes
>> CONFIG_EXTCON_SM5502 to be =m when CONFIG_I2C=m.
>>
>> drivers/built-in.o: In function `regmap_smbus_byte_reg_read':
>> regmap-i2c.c:(.text+0x5030a): undefined reference to `i2c_smbus_read_byte_data'
>> drivers/built-in.o: In function `regmap_smbus_byte_reg_write':
>> regmap-i2c.c:(.text+0x50338): undefined reference to `i2c_smbus_write_byte_data'
>> drivers/built-in.o: In function `regmap_smbus_word_reg_read':
>> regmap-i2c.c:(.text+0x50356): undefined reference to `i2c_smbus_read_word_data'
>> drivers/built-in.o: In function `regmap_smbus_word_reg_write':
>> regmap-i2c.c:(.text+0x50384): undefined reference to `i2c_smbus_write_word_data'
>> drivers/built-in.o: In function `regmap_i2c_read':
>> regmap-i2c.c:(.text+0x503cf): undefined reference to `i2c_transfer'
>> drivers/built-in.o: In function `regmap_i2c_gather_write':
>> regmap-i2c.c:(.text+0x50442): undefined reference to `i2c_transfer'
>> drivers/built-in.o: In function `regmap_i2c_write':
>> regmap-i2c.c:(.text+0x50474): undefined reference to `i2c_master_send'
>> drivers/built-in.o: In function `sm5502_muic_i2c_init':
>> extcon-sm5502.c:(.init.text+0x6630): undefined reference to `i2c_register_driver'
>>
>> Signed-off-by: Randy Dunlap <[email-masked]>
>> Cc:	MyungJoo Ham <[email-masked]>
>> Cc:	Chanwoo Choi <[email-masked]>
>> ---
>>  drivers/extcon/Kconfig |    1 +
>>  1 file changed, 1 insertion(+)
>>
>> Index: linux-next-20140813/drivers/extcon/Kconfig
>> ===================================================================
>> --- linux-next-20140813.orig/drivers/extcon/Kconfig
>> +++ linux-next-20140813/drivers/extcon/Kconfig
>> @@ -72,6 +72,7 @@ config EXTCON_PALMAS
>>  
>>  config EXTCON_SM5502
>>  	tristate "SM5502 EXTCON support"
>> +	depends on I2C
>>  	select IRQ_DOMAIN
>>  	select REGMAP_I2C
>>  	select REGMAP_IRQ
>>
> 
> --

-- 
~Randy