linux-kernel - Re: [PATCH] s390: boot: compressed: misc: Express the return value of _sclp_print

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Message-ID: <54AA5B6E.4040506@sunrus.com.cn>
Date:	Mon, 05 Jan 2015 17:37:50 +0800
From:	Chen Gang S <gang.chen@...rus.com.cn>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
CC:	schwidefsky@...ibm.com, linux-s390@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] s390: boot: compressed: misc: Express the return value
 of _sclp_print_early()

On 1/5/15 17:21, Heiko Carstens wrote:
> On Sat, Jan 03, 2015 at 05:29:07PM +0800, Chen Gang wrote:
>> _sclp_print_early() has return value: at present, return 0 for OK, 1 for
>> failure. It returns '%r2', so use 'long' as return value (upper caller
>> can check '%r2' directly). The related warning:
>>
>>     CC      arch/s390/boot/compressed/misc.o
>>   arch/s390/boot/compressed/misc.c:66:8: warning: type defaults to 'int' in declaration of '_sclp_print_early' [-Wimplicit-int]
>>    extern _sclp_print_early(const char *);
>>           ^
>>
>> At present, _sclp_print_early() is only used by puts(), so can still
>> remain its declaration in 'misc.c' file.
>>
>> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
>> ---
>>  arch/s390/boot/compressed/misc.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/s390/boot/compressed/misc.c b/arch/s390/boot/compressed/misc.c
>> index 57cbaff..09003b2 100644
>> --- a/arch/s390/boot/compressed/misc.c
>> +++ b/arch/s390/boot/compressed/misc.c
>> @@ -63,7 +63,7 @@ static unsigned long free_mem_end_ptr;
>>  #include "../../../../lib/decompress_unxz.c"
>>  #endif
>>  
>> -extern _sclp_print_early(const char *);
>> +extern long _sclp_print_early(const char *);
> 
> Thanks, applied. However I moved the declaration to the sclp header file.
> 

OK, Thanks.

-- 
Chen Gang

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