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path: root/drivers/mtd/ubi/cdev.c
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Diffstat (limited to 'drivers/mtd/ubi/cdev.c')
-rw-r--r--drivers/mtd/ubi/cdev.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 45c329694a5e..22547d7a84ea 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -367,6 +367,10 @@ static ssize_t vol_cdev_write(struct file *file, const char __user *buf,
return count;
}
+ /*
+ * We voluntarily do not take into account the skip_check flag
+ * as we want to make sure what we wrote was correctly written.
+ */
err = ubi_check_volume(ubi, vol->vol_id);
if (err < 0)
return err;
@@ -622,6 +626,13 @@ static int verify_mkvol_req(const struct ubi_device *ubi,
req->vol_type != UBI_STATIC_VOLUME)
goto bad;
+ if (req->flags & ~UBI_VOL_VALID_FLGS)
+ goto bad;
+
+ if (req->flags & UBI_VOL_SKIP_CRC_CHECK_FLG &&
+ req->vol_type != UBI_STATIC_VOLUME)
+ goto bad;
+
if (req->alignment > ubi->leb_size)
goto bad;