On Sun, 2015-05-31 at 21:26 -0700, David Miller wrote:

From: Ian Campbell <redacted>
Date: Fri, 29 May 2015 17:22:04 +0100

quoted

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 <redacted>

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.