UBI: fix s/then/than/ typos

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

drivers/mtd/ubi/Kconfig

@@ -27,7 +27,7 @@ config MTD_UBI_WL_THRESHOLD
 	  The default value should be OK for SLC NAND flashes, NOR flashes and
 	  other flashes which have eraseblock life-cycle 100000 or more.
 	  However, in case of MLC NAND flashes which typically have eraseblock
-	  life-cycle less then 10000, the threshold should be lessened (e.g.,
+	  life-cycle less than 10000, the threshold should be lessened (e.g.,
 	  to 128 or 256, although it does not have to be power of 2).
 
 config MTD_UBI_BEB_RESERVE

drivers/mtd/ubi/io.c

@@ -65,7 +65,7 @@
  *
  * A: because when writing a sub-page, MTD still writes a full 2K page but the
  * bytes which are no relevant to the sub-page are 0xFF. So, basically, writing
- * 4x512 sub-pages is 4 times slower then writing one 2KiB NAND page. Thus, we
+ * 4x512 sub-pages is 4 times slower than writing one 2KiB NAND page. Thus, we
  * prefer to use sub-pages only for EV and VID headers.
  *
  * As it was noted above, the VID header may start at a non-aligned offset.

drivers/mtd/ubi/kapi.c

@@ -488,7 +488,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_write);
  *
  * This function changes the contents of a logical eraseblock atomically. @buf
  * has to contain new logical eraseblock data, and @len - the length of the
- * data, which has to be aligned. The length may be shorter then the logical
+ * data, which has to be aligned. The length may be shorter than the logical
  * eraseblock size, ant the logical eraseblock may be appended to more times
  * later on. This function guarantees that in case of an unclean reboot the old
  * contents is preserved. Returns zero in case of success and a negative error
@@ -571,7 +571,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_erase);
  *
  * This function un-maps logical eraseblock @lnum and schedules the
  * corresponding physical eraseblock for erasure, so that it will eventually be
- * physically erased in background. This operation is much faster then the
+ * physically erased in background. This operation is much faster than the
  * erase operation.
  *
  * Unlike erase, the un-map operation does not guarantee that the logical
@@ -590,7 +590,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_erase);
  *
  * The main and obvious use-case of this function is when the contents of a
  * logical eraseblock has to be re-written. Then it is much more efficient to
- * first un-map it, then write new data, rather then first erase it, then write
+ * first un-map it, then write new data, rather than first erase it, then write
  * new data. Note, once new data has been written to the logical eraseblock,
  * UBI guarantees that the old contents has gone forever. In other words, if an
  * unclean reboot happens after the logical eraseblock has been un-mapped and

drivers/mtd/ubi/scan.c

@@ -231,7 +231,7 @@ static struct ubi_scan_volume *add_volume(struct ubi_scan_info *si, int vol_id,
  * case of success this function returns a positive value, in case of failure, a
  * negative error code is returned. The success return codes use the following
  * bits:
- *     o bit 0 is cleared: the first PEB (described by @seb) is newer then the
+ *     o bit 0 is cleared: the first PEB (described by @seb) is newer than the
  *       second PEB (described by @pnum and @vid_hdr);
  *     o bit 0 is set: the second PEB is newer;
  *     o bit 1 is cleared: no bit-flips were detected in the newer LEB;
@@ -452,7 +452,7 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
 
 		if (cmp_res & 1) {
 			/*
-			 * This logical eraseblock is newer then the one
+			 * This logical eraseblock is newer than the one
 			 * found earlier.
 			 */
 			err = validate_vid_hdr(vid_hdr, sv, pnum);

drivers/mtd/ubi/wl.c

@@ -350,7 +350,7 @@ static void prot_queue_add(struct ubi_device *ubi, struct ubi_wl_entry *e)
  * @max: highest possible erase counter
  *
  * This function looks for a wear leveling entry with erase counter closest to
- * @max and less then @max.
+ * @max and less than @max.
  */
 static struct ubi_wl_entry *find_wl_entry(struct rb_root *root, int max)
 {