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

[Stephen Rothwell]

Hi All,

On Fri, 29 Apr 2016 16:45:43 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> 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