xen: make use of xenbus_read_unsigned() in xen-netfront
Use xenbus_read_unsigned() instead of xenbus_scanf() when possible.
This requires to change the type of some reads from int to unsigned,
but these cases have been wrong before: negative values are not allowed
for the modified cases.
Cc: netdev@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
OraBug:
25497392
(cherry picked from commit
2890ea5c13321d26732c4520649681965480ee1c)
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>