Hi Konrad, Building Linus' tree, today's linux-next build (x86_64 allmodconfig) produced this warning: drivers/block/xen-blkback/xenbus.c: In function 'xen_blkbk_discard': drivers/block/xen-blkback/xenbus.c:419:4: warning: passing argument 1 of 'dev_warn' makes pointer from integer without a cast [enabled by default] include/linux/device.h:894:5: note: expected 'const struct device *' but argument is of type 'long int' Introduced by commit 3389bb8bf761 ("xen/blkback: Make optional features be really optional"). Passing "dev-dev" to dev_warn() was hopefully not intended ... -- Cheers, Stephen Rothwell sfr@canb.auug.org.au