linux-kernel - Re: linux-next: build warning after merge of the akpm-current tree

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Date:	Fri, 29 Apr 2016 16:55:00 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Quinn Tran <quinn.tran@...gic.com>
Subject: Re: linux-next: build warning after merge of the akpm-current tree

Hi All,

On Fri, 29 Apr 2016 16:45:43 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the akpm-current tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
> 
> drivers/scsi/ipr.c: In function 'ipr_show_device_id':
> drivers/scsi/ipr.c:4462:34: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'long unsigned int' [-Wformat=]
>    len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
>                                   ^
> 
> Lots and lots like this :-(
> 
> Introduced by commit
> 
>   eef17fb79096 ("byteswap: try to avoid __builtin_constant_p gcc bug")
> 
> I guess __builtin_bswap64() has type "unsigned long int" :-(

So, I have reverted that commit for today ... it produces too many
warnings :-(

-- 
Cheers,
Stephen Rothwell