diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 9e098d53b046..064c1acb9f00 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -1070,7 +1070,7 @@ static void setup_DMA(void)
 	if (raw_cmd->length == 0) {
 		print_hex_dump(KERN_INFO, "zero dma transfer size: ",
 			       DUMP_PREFIX_NONE, 16, 1,
-			       raw_cmd->cmd, raw_cmd->cmd_count, false);
+			       raw_cmd->fullcmd, raw_cmd->cmd_count, false);
 		cont->done(0);
 		fdc_state[current_fdc].reset = 1;
 		return;
@@ -1515,7 +1515,7 @@ static void setup_rw_floppy(void)
 
 	r = 0;
 	for (i = 0; i < raw_cmd->cmd_count; i++)
-		r |= output_byte(current_fdc, raw_cmd->cmd[i]);
+		r |= output_byte(current_fdc, raw_cmd->fullcmd[i]);
 
 	debugt(__func__, "rw_command");
 
diff --git a/include/uapi/linux/fd.h b/include/uapi/linux/fd.h
index 2e9c2c1c18e6..8b80c63b971c 100644
--- a/include/uapi/linux/fd.h
+++ b/include/uapi/linux/fd.h
@@ -371,9 +371,14 @@ struct floppy_raw_cmd {
 	 */
 
 	unsigned char cmd_count;
-	unsigned char cmd[FD_RAW_CMD_SIZE];
-	unsigned char reply_count;
-	unsigned char reply[FD_RAW_REPLY_SIZE];
+	union {
+		struct {
+			unsigned char cmd[FD_RAW_CMD_SIZE];
+			unsigned char reply_count;
+			unsigned char reply[FD_RAW_REPLY_SIZE];
+		};
+		unsigned char fullcmd[FD_RAW_CMD_FULLSIZE];
+	};
 	int track;
 	int resultcode;