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| 1 | --- a/drivers/mtd/mtdconcat.c |
| 2 | +++ b/drivers/mtd/mtdconcat.c |
| 3 | @@ -619,7 +619,8 @@ static void concat_sync(struct mtd_info |
| 4 | |
| 5 | for (i = 0; i < concat->num_subdev; i++) { |
| 6 | struct mtd_info *subdev = concat->subdev[i]; |
| 7 | - subdev->sync(subdev); |
| 8 | + if (subdev->sync) |
| 9 | + subdev->sync(subdev); |
| 10 | } |
| 11 | } |
| 12 | |
| 13 |
