diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index efb58f9f5aa9..3bbdc9aa1de1 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2187,7 +2187,7 @@ static int do_scsi_command(struct fsg_common *common)
 		common->data_size_from_cmnd = 0;
 		sprintf(unknown, "Unknown x%02x", common->cmnd[0]);
 		reply = check_command(common, common->cmnd_size,
-				      DATA_DIR_UNKNOWN, 0xff, 0, unknown);
+				      DATA_DIR_UNKNOWN, ~0, 0, unknown);
 		if (reply == 0) {
 			common->curlun->sense_data = SS_INVALID_COMMAND;
 			reply = -EINVAL;
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 0360f56221ea..e358130a4857 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -2553,7 +2553,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 		fsg->data_size_from_cmnd = 0;
 		sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]);
 		if ((reply = check_command(fsg, fsg->cmnd_size,
-				DATA_DIR_UNKNOWN, 0xff, 0, unknown)) == 0) {
+				DATA_DIR_UNKNOWN, ~0, 0, unknown)) == 0) {
 			fsg->curlun->sense_data = SS_INVALID_COMMAND;
 			reply = -EINVAL;
 		}