On Sun, 2015-05-31 at 21:26 -0700, David Miller wrote:
> From: Ian Campbell <[email protected]>
> Date: Fri, 29 May 2015 17:22:04 +0100
>
> > drivers/net/xen-netback/netback.c: In function ‘xenvif_tx_build_gops’:
> > drivers/net/xen-netback/netback.c:1253:8: warning: format ‘%lu’ expects
> > argument of type ‘long unsigned int’, but argument 5 has type ‘int’
> > [-Wformat=]
> > (txreq.offset&~PAGE_MASK) + txreq.size);
> > ^
> >
> > txreq.offset and .size are uint16_t fields.
> >
> > Signed-off-by: Ian Campbell <[email protected]>
>
> This may get rid of the compiler warning on your machine, but it creates
> one on mine:
>
> drivers/net/xen-netback/netback.c: In function ‘xenvif_tx_build_gops’:
> drivers/net/xen-netback/netback.c:1253:8: warning: format ‘%u’ expects
> argument of type ‘unsigned int’, but argument 5 has type ‘long unsigned int’
> [-Wformat=]
> (txreq.offset&~PAGE_MASK) + txreq.size);
> ^
>
> There is a type involved in this calculation which is arch
> dependent, so you'll need to add a cast or something to
> make this warning go away in all cases.
Ah, I only considered the types txreq.{offset,size} and missed thinking
about PAGE_MASK.
I'll resend with a cast.
Ian.
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