linux-kernel - Re: [PATCH] drivers/watchdog/Kconfig: Let XILINX_WATCHDOG and TEGRA_WATCHDOG depend on HAS

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Date:	Sun, 05 Oct 2014 09:25:14 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>, wim@...ana.be,
	linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/watchdog/Kconfig: Let XILINX_WATCHDOG and TEGRA_WATCHDOG
 depend on HAS_IOMEM

On 10/5/14 8:18, Guenter Roeck wrote:
> On 10/04/2014 02:39 AM, Chen Gang wrote:
>> They need HAS_IOMEM, so let them depend on it, the related error (with
>> allmodconfig under um):
>>
>>      MODPOST 1205 modules
>>    ERROR: "syscall" [fs/hostfs/hostfs.ko] undefined!
>>    ERROR: "devm_ioremap_resource" [drivers/watchdog/tegra_wdt.ko] undefined!
>>    ERROR: "devm_ioremap_resource" [drivers/watchdog/of_xilinx_wdt.ko] undefined!
>>
> Headline is a bit excessive ("watchdog: ..." would have been sufficient,
> the first error is irrelevant as you found out yourself, and you got an
> extra empty line here. Otherwise looks good.
> 
> Can you resubmit with that fixed ?
> 

OK, thank, I shall send patch v2 for it.

> On a side note, guess the conclusion was to not provide a dummy for
> devm_ioremap_resource if HAS_IOMEM is not defined. Too bad.
>

For me, it is checked during config time, so need report error during
compiling or building time instead of dummy.

And I'd like to let devm_ioremap* quoted by "#if HAS_IOMEM", so can
find this issue during compiling time, not in linking time (which can
save builder's time resource).


Thanks. 

>>
>> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
>> ---
>>   drivers/watchdog/Kconfig | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
>> index a51ccf3..d0ddf90 100644
>> --- a/drivers/watchdog/Kconfig
>> +++ b/drivers/watchdog/Kconfig
>> @@ -132,6 +132,7 @@ config WM8350_WATCHDOG
>>
>>   config XILINX_WATCHDOG
>>       tristate "Xilinx Watchdog timer"
>> +    depends on HAS_IOMEM
>>       select WATCHDOG_CORE
>>       help
>>         Watchdog driver for the xps_timebase_wdt ip core.
>> @@ -472,7 +473,7 @@ config SIRFSOC_WATCHDOG
>>
>>   config TEGRA_WATCHDOG
>>       tristate "Tegra watchdog"
>> -    depends on ARCH_TEGRA || COMPILE_TEST
>> +    depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
>>       select WATCHDOG_CORE
>>       help
>>         Say Y here to include support for the watchdog timer
>>
> 

-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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