linux-kernel - Re: [PATCH] watchdog: iTCO: Fix dependencies on I2C

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Date:	Wed, 23 Sep 2015 06:59:01 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Matt Fleming <matt@...eblueprint.co.uk>
Cc:	Wim Van Sebroeck <wim@...ana.be>, linux-watchdog@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Matt Fleming <matt.fleming@...el.com>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH] watchdog: iTCO: Fix dependencies on I2C

On 09/23/2015 03:32 AM, Matt Fleming wrote:
> On Fri, 11 Sep, at 06:28:08AM, Guenter Roeck wrote:
>> If I2C is built as module, the iTCO watchdog driver must be built as module
>> as well. I2C_I801 must only be selected if I2C is configured.
>>
>> This fixes the following build errors, seen if I2C=m and ITCO_WDT=y.
>>
>> i2c-i801.c:(.text+0x2bf055): undefined reference to `i2c_del_adapter'
>> i2c-i801.c:(.text+0x2c13e0): undefined reference to `i2c_add_adapter'
>> i2c-i801.c:(.text+0x2c17bd): undefined reference to `i2c_new_device'
>>
>> Fixes: 2a7a0e9bf7b3 ("watchdog: iTCO_wdt: Add support for TCO on Intel Sunrisepoint")
>> Cc: Matt Fleming <matt.fleming@...el.com>
>> Cc: Lee Jones <lee.jones@...aro.org>
>> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
>> ---
>>   drivers/watchdog/Kconfig | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
>> index 55c4b5b0a317..75c358ce71a7 100644
>> --- a/drivers/watchdog/Kconfig
>> +++ b/drivers/watchdog/Kconfig
>> @@ -797,8 +797,9 @@ config ITCO_WDT
>>   	tristate "Intel TCO Timer/Watchdog"
>>   	depends on (X86 || IA64) && PCI
>>   	select WATCHDOG_CORE
>> +	depends on I2C || I2C=n
>>   	select LPC_ICH if !EXPERT
>> -	select I2C_I801 if !EXPERT
>> +	select I2C_I801 if !EXPERT && I2C
>>   	---help---
>>   	  Hardware driver for the intel TCO timer based watchdog devices.
>>   	  These drivers are included in the Intel 82801 I/O Controller
>
> Whoops, thanks for catching this Guenter. Are you going to send this
> to Linus?
>

Wim should do that.

> Reviewed-by: Matt Fleming <matt.fleming@...el.com>
>
Thanks for the review.

Guenter

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