if (ns->busw == 16)
                NS_WARN("16-bit flashes support wasn't tested\n");
 
-       printk("flash size: %llu MiB\n",        ns->geom.totsz >> 20);
+       printk("flash size: %llu MiB\n",
+                       (unsigned long long)ns->geom.totsz >> 20);
        printk("page size: %u bytes\n",         ns->geom.pgsz);
        printk("OOB area size: %u bytes\n",     ns->geom.oobsz);
        printk("sector size: %u KiB\n",         ns->geom.secsz >> 10);
        printk("bus width: %u\n",               ns->busw);
        printk("bits in sector size: %u\n",     ns->geom.secshift);
        printk("bits in page size: %u\n",       ns->geom.pgshift);
-       printk("bits in OOB size: %u\n",        ns->geom.oobshift);
-       printk("flash size with OOB: %llu KiB\n", ns->geom.totszoob >> 10);
+       printk("bits in OOB size: %u\n",        ns->geom.oobshift);
+       printk("flash size with OOB: %llu KiB\n",
+                       (unsigned long long)ns->geom.totszoob >> 10);
        printk("page address bytes: %u\n",      ns->geom.pgaddrbytes);
        printk("sector address bytes: %u\n",    ns->geom.secaddrbytes);
        printk("options: %#x\n",                ns->options);