mtd: nand_bcm: fix hot spin and code duplication
In the branch where pagesize equalled NAND_DATA_ACCESS_SIZE, NumToRead
wasn't decremented in the `while (numToRead > 11)' loop.
Also the first and last while loops were duplicated in both branches.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/nand_bcm_umi.h b/drivers/mtd/nand/nand_bcm_umi.h
index 7cec2cd..198b304 100644
--- a/drivers/mtd/nand/nand_bcm_umi.h
+++ b/drivers/mtd/nand/nand_bcm_umi.h
@@ -167,18 +167,27 @@
int numToRead = 16; /* There are 16 bytes per sector in the OOB */
/* ECC is already paused when this function is called */
+ if (pageSize != NAND_DATA_ACCESS_SIZE) {
+ /* skip BI */
+#if defined(__KERNEL__) && !defined(STANDALONE)
+ *oobp++ = REG_NAND_DATA8;
+#else
+ REG_NAND_DATA8;
+#endif
+ numToRead--;
+ }
+
+ while (numToRead > numEccBytes) {
+ /* skip free oob region */
+#if defined(__KERNEL__) && !defined(STANDALONE)
+ *oobp++ = REG_NAND_DATA8;
+#else
+ REG_NAND_DATA8;
+#endif
+ numToRead--;
+ }
if (pageSize == NAND_DATA_ACCESS_SIZE) {
- while (numToRead > numEccBytes) {
- /* skip free oob region */
-#if defined(__KERNEL__) && !defined(STANDALONE)
- *oobp++ = REG_NAND_DATA8;
-#else
- REG_NAND_DATA8;
-#endif
- numToRead--;
- }
-
/* read ECC bytes before BI */
nand_bcm_umi_bch_resume_read_ecc_calc();
@@ -190,6 +199,7 @@
#else
eccCalc[eccPos++] = REG_NAND_DATA8;
#endif
+ numToRead--;
}
nand_bcm_umi_bch_pause_read_ecc_calc();
@@ -204,49 +214,18 @@
numToRead--;
}
- /* read ECC bytes */
- nand_bcm_umi_bch_resume_read_ecc_calc();
- while (numToRead) {
+ }
+ /* read ECC bytes */
+ nand_bcm_umi_bch_resume_read_ecc_calc();
+ while (numToRead) {
#if defined(__KERNEL__) && !defined(STANDALONE)
- *oobp = REG_NAND_DATA8;
- eccCalc[eccPos++] = *oobp;
- oobp++;
+ *oobp = REG_NAND_DATA8;
+ eccCalc[eccPos++] = *oobp;
+ oobp++;
#else
- eccCalc[eccPos++] = REG_NAND_DATA8;
-#endif
- numToRead--;
- }
- } else {
- /* skip BI */
-#if defined(__KERNEL__) && !defined(STANDALONE)
- *oobp++ = REG_NAND_DATA8;
-#else
- REG_NAND_DATA8;
+ eccCalc[eccPos++] = REG_NAND_DATA8;
#endif
numToRead--;
-
- while (numToRead > numEccBytes) {
- /* skip free oob region */
-#if defined(__KERNEL__) && !defined(STANDALONE)
- *oobp++ = REG_NAND_DATA8;
-#else
- REG_NAND_DATA8;
-#endif
- numToRead--;
- }
-
- /* read ECC bytes */
- nand_bcm_umi_bch_resume_read_ecc_calc();
- while (numToRead) {
-#if defined(__KERNEL__) && !defined(STANDALONE)
- *oobp = REG_NAND_DATA8;
- eccCalc[eccPos++] = *oobp;
- oobp++;
-#else
- eccCalc[eccPos++] = REG_NAND_DATA8;
-#endif
- numToRead--;
- }
}
}