mtd: nand: omap: drop condition with no effect

The if and the else branch code are identical - so the condition has no
effect on the effective code. This patch removes the condition and the
duplicated code and updates the documentation as suggested by
Roger Quadros <rogerq@ti.com>.

Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/nand/omap2.c

@@ -1048,10 +1048,9 @@ static int omap_dev_ready(struct mtd_info *mtd)
  * @mtd: MTD device structure
  * @mode: Read/Write mode
  *
- * When using BCH, sector size is hardcoded to 512 bytes.
- * Using wrapping mode 6 both for reading and writing if ELM module not uses
- * for error correction.
- * On writing,
+ * When using BCH with SW correction (i.e. no ELM), sector size is set
+ * to 512 bytes and we use BCH_WRAPMODE_6 wrapping mode
+ * for both reading and writing with:
  * eccsize0 = 0  (no additional protected byte in spare area)
  * eccsize1 = 32 (skip 32 nibbles = 16 bytes per sector in spare area)
  */
@@ -1071,15 +1070,9 @@ static void __maybe_unused omap_enable_hwecc_bch(struct mtd_info *mtd, int mode)
 	case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW:
 		bch_type = 0;
 		nsectors = 1;
-		if (mode == NAND_ECC_READ) {
-			wr_mode	  = BCH_WRAPMODE_6;
-			ecc_size0 = BCH_ECC_SIZE0;
-			ecc_size1 = BCH_ECC_SIZE1;
-		} else {
-			wr_mode   = BCH_WRAPMODE_6;
-			ecc_size0 = BCH_ECC_SIZE0;
-			ecc_size1 = BCH_ECC_SIZE1;
-		}
+		wr_mode	  = BCH_WRAPMODE_6;
+		ecc_size0 = BCH_ECC_SIZE0;
+		ecc_size1 = BCH_ECC_SIZE1;
 		break;
 	case OMAP_ECC_BCH4_CODE_HW:
 		bch_type = 0;
@@ -1097,15 +1090,9 @@ static void __maybe_unused omap_enable_hwecc_bch(struct mtd_info *mtd, int mode)
 	case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW:
 		bch_type = 1;
 		nsectors = 1;
-		if (mode == NAND_ECC_READ) {
-			wr_mode	  = BCH_WRAPMODE_6;
-			ecc_size0 = BCH_ECC_SIZE0;
-			ecc_size1 = BCH_ECC_SIZE1;
-		} else {
-			wr_mode   = BCH_WRAPMODE_6;
-			ecc_size0 = BCH_ECC_SIZE0;
-			ecc_size1 = BCH_ECC_SIZE1;
-		}
+		wr_mode	  = BCH_WRAPMODE_6;
+		ecc_size0 = BCH_ECC_SIZE0;
+		ecc_size1 = BCH_ECC_SIZE1;
 		break;
 	case OMAP_ECC_BCH8_CODE_HW:
 		bch_type = 1;