Hi Jens, After merging the block tree, today's linux-next build (x86_64 allmodconfig) produced this warning: In file included from include/linux/kernel.h:13:0, from drivers/block/skd_main.c:19: drivers/block/skd_main.c: In function 'skd_cons_skmsg': drivers/block/skd_main.c:4562:33: warning: format '%u' expects argument of type 'unsigned int', but argument 5 has type 'long unsigned int' [-Wformat=] (unsigned long) sizeof(struct skd_fitmsg_context) * ^ include/linux/printk.h:216:33: note: in definition of macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ^ drivers/block/skd_main.c:4559:2: note: in expansion of macro 'VPRINTK' VPRINTK(skdev, "skmsg_table kzalloc, struct %u, count %u total %lu\n", ^ and several more. Introduced by commit 0e2c4a3a6c0c ("drivers/block/skd_main.c: fix a few things, disable on 32-bit"). sizeof() needs %zu to print, right? -- Cheers, Stephen Rothwell sfr@canb.auug.org.au