diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index bcb64eb..4d28072 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -4292,7 +4292,7 @@
 static struct device_attribute pmcraid_adapter_id_attr = {
 	.attr = {
 		 .name = "adapter_id",
-		 .mode = S_IRUGO | S_IWUSR,
+		 .mode = S_IRUGO,
 		 },
 	.show = pmcraid_show_adapter_id,
 };