/* Register kernel log buffer */
addr = log_buf_addr_get();
+ if (addr == NULL)
+ return;
+
size = log_buf_len_get();
+ if (size == 0)
+ return;
+
rc = opal_register_dump_region(OPAL_DUMP_REGION_LOG_BUF,
__pa(addr), size);
/* Don't warn if this is just an older OPAL that doesn't