diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c
index 905c6de9e20e..0841ab271496 100644
--- a/drivers/staging/greybus/operation.c
+++ b/drivers/staging/greybus/operation.c
@@ -368,20 +368,23 @@ int gb_operation_status_map(u8 status)
 	switch (status) {
 	case GB_OP_SUCCESS:
 		return 0;
-	case GB_OP_INVALID:
-		return -EINVAL;
-	case GB_OP_NO_MEMORY:
-		return -ENOMEM;
 	case GB_OP_INTERRUPTED:
 		return -EINTR;
-	case GB_OP_RETRY:
-		return -EAGAIN;
+	case GB_OP_TIMEOUT:
+		return -ETIMEDOUT;
+	case GB_OP_NO_MEMORY:
+		return -ENOMEM;
 	case GB_OP_PROTOCOL_BAD:
 		return -EPROTONOSUPPORT;
 	case GB_OP_OVERFLOW:
 		return -EMSGSIZE;
-	case GB_OP_TIMEOUT:
-		return -ETIMEDOUT;
+	case GB_OP_INVALID:
+		return -EINVAL;
+	case GB_OP_RETRY:
+		return -EAGAIN;
+	case GB_OP_MALFUNCTION:
+		return -EILSEQ;
+	case GB_OP_UNKNOWN_ERROR:
 	default:
 		return -EIO;
 	}
diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index 7f835d2e8f35..feff8238f7cf 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -14,14 +14,16 @@
 struct gb_operation;
 
 enum gb_operation_result {
-	GB_OP_SUCCESS		= 0,
-	GB_OP_INVALID		= 1,
-	GB_OP_NO_MEMORY		= 2,
-	GB_OP_INTERRUPTED	= 3,
-	GB_OP_RETRY		= 4,
-	GB_OP_PROTOCOL_BAD	= 5,
-	GB_OP_OVERFLOW		= 6,
-	GB_OP_TIMEOUT		= 0xff,
+	GB_OP_SUCCESS		= 0x00,
+	GB_OP_INTERRUPTED	= 0x01,
+	GB_OP_TIMEOUT		= 0x02,
+	GB_OP_NO_MEMORY		= 0x03,
+	GB_OP_PROTOCOL_BAD	= 0x04,
+	GB_OP_OVERFLOW		= 0x05,
+	GB_OP_INVALID		= 0x06,
+	GB_OP_RETRY		= 0x07,
+	GB_OP_UNKNOWN_ERROR	= 0xfe,
+	GB_OP_MALFUNCTION	= 0xff,
 };
 
 struct gb_message {