diff options
| -rw-r--r-- | drivers/mtd/ubi/scan.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index 197cd650356b..b24af2104a2a 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -407,8 +407,12 @@ out_free_vidh: * @vid_hdr: the volume identifier header * @bitflips: if bit-flips were detected when this physical eraseblock was read * - * This function returns zero in case of success and a negative error code in - * case of failure. + * This function adds information about a used physical eraseblock to the + * 'used' tree of the corresponding volume. The function is rather complex + * because it has to handle cases when this is not the first physical + * eraseblock belonging to the same logical eraseblock, and the newer one has + * to be picked, while the older one has to be dropped. This function returns + * zero in case of success and a negative error code in case of failure. */ int ubi_scan_add_used(const struct ubi_device *ubi, struct ubi_scan_info *si, int pnum, int ec, const struct ubi_vid_hdr *vid_hdr, |