linux-kernel - Re: [PATCH] h8300: include: asm: Kbuild: add gpio.h for pass compiling

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Date:	Fri, 30 Aug 2013 17:12:34 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Arnd Bergmann <arnd@...db.de>,
	"dhowells@...hat.com" <dhowells@...hat.com>,
	Dave Jones <davej@...hat.com>,
	David Sharp <dhsharp@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH] h8300: include: asm: Kbuild: add gpio.h for pass compiling

On 08/27/2013 12:11 PM, Chen Gang wrote:
> On 08/26/2013 06:59 PM, Chen Gang wrote:
>> On 08/26/2013 06:21 PM, Geert Uytterhoeven wrote:
>>> On Mon, Aug 26, 2013 at 12:16 PM, Chen Gang <gang.chen@...anux.com> wrote:
>>>> Need add default "gpio.h" for h8300, or can not pass compiling.
>>>>
>>>> The related error (allmodconfig for h8300):
>>>>
>>>>   arch/h8300/kernel/h8300_ksyms.c:17:22: fatal error: asm/gpio.h: No such file or directory
>>>>    #include <asm/gpio.h>
>>>>                         ^
>>>
>>> I this include needed at all? Perhaps it can just be removed?
>>>
>>
>> Pardon ?  Do you mean, only removing it  will be OK ?
>>
>>>> Signed-off-by: Chen Gang <gang.chen@...anux.com>
>>>> ---
>>>>  arch/h8300/include/asm/Kbuild |    1 +
>>>>  1 files changed, 1 insertions(+), 0 deletions(-)
>>>>
>>>> diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild
>>>> index 8ada3cf..4c627aa 100644
>>>> --- a/arch/h8300/include/asm/Kbuild
>>>> +++ b/arch/h8300/include/asm/Kbuild
>>>> @@ -1,6 +1,7 @@
>>>>
>>>>  generic-y += clkdev.h
>>>>  generic-y += exec.h
>>>> +generic-y += gpio.h
>>>>  generic-y += linkage.h
>>>>  generic-y += mmu.h
>>>>  generic-y += module.h
>>>
>>> The only gpio-related exports in arch/h8300/kernel/h8300_ksyms.c are:
>>>
>>> EXPORT_SYMBOL(h8300_reserved_gpio);
>>> EXPORT_SYMBOL(h8300_free_gpio);
>>> EXPORT_SYMBOL(h8300_set_gpio_dir);
>>>
>>> and these are definitely not provided by asm-generic/gpio.h.
>>>
>>
>> Yeah, I will try to remove "#include <asm/gpio.h>" to see whether can
>> pass compiling, tomorrow.  :-)
>>
>> And now, I feel (just guess), it will not, for h8300 really need gpio
>> (it has "gpio-internal.h"), commonly it will need "asm/gpio.h" too.
>>
>> Tomorrow, I will try to prove whether my guess is correct or not.  ;-).
>>
> 
> After reading the related code (search "gpio.h" in root source tree),
> it seems what you said is correct, my guess is incorrect.  :-(
> 
> Hmm... but better to get final conclusion after finish allmodconfig
> compiling.
> 
> Now, I am compiling, and excuse me, I can not finish today because of
> some issues (mainly for 'gcc 4.8.0', part for 'ld 2.22', and part for
> kernel), I will 'process' them, hope can finish before 2013-08-31.
> 

Oh, sorry, I can not finish allmodconfig today, I have to delay the
schedule.

The excuse is "it is too many issues (both for h8000 and for other sub
systems) than I guessed originally".

I should try to finish it within next week (2013-09-06).


BTW: I disable the '-Os' for allmodconfig under h8300, or gcc will cause
many various bugs (disable '-Os' doesn't matter with our goal, and I
will continue for gcc issues with gcc guys, next).


Thanks.

> 
> Welcome additional suggestions or completions.
> 
> Thanks.
> 
>>
>> Thanks.
>>
>>> Gr{oetje,eeting}s,
>>>
>>>                         Geert
>>>
>>> --
>>> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
>>>
>>> In personal conversations with technical people, I call myself a hacker. But
>>> when I'm talking to journalists I just say "programmer" or something like that.
>>>                                 -- Linus Torvalds
>>>
>>>
>>
>>
> 
> 


-- 
Chen Gang
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