Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"

This reverts commit ff06db1efb.

drivers/block/floppy.c

@@ -3663,6 +3663,11 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 
 	opened_bdev[drive] = bdev;
 
+	if (!(mode & (FMODE_READ|FMODE_WRITE))) {
+		res = -EINVAL;
+		goto out;
+	}
+
 	res = -ENXIO;
 
 	if (!floppy_track_buffer) {
@@ -3706,7 +3711,6 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 	if (UFDCS->rawcmd == 1)
 		UFDCS->rawcmd = 2;
 
-	if (mode & (FMODE_READ|FMODE_WRITE)) {
 	UDRS->last_checked = 0;
 	clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
 	check_disk_change(bdev);
@@ -3714,7 +3718,6 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 		goto out;
 	if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
 		goto out;
-	}
 
 	res = -EROFS;