diff -Naur linux-3.16.3/drivers/scsi/sd.c linux-3.16.3.new/drivers/scsi/sd.c
--- linux-3.16.3/drivers/scsi/sd.c	2014-09-17 20:22:16.000000000 +0300
+++ linux-3.16.3.new/drivers/scsi/sd.c	2014-10-02 13:37:04.999705771 +0300
@@ -2478,7 +2478,7 @@
 				"Assuming drive cache: write back\n");
 		sdkp->WCE = 1;
 	} else {
-		sd_first_printk(KERN_ERR, sdkp,
+		sd_first_printk(KERN_WARNING, sdkp,
 				"Assuming drive cache: write through\n");
 		sdkp->WCE = 0;
 	}