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From: "Brian Norris" <computersforpeace@gmail.com>
To: "Artem Bityutskiy" <dedekind1@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>,
	Matthieu Castet <matthieu.castet@parrot.com>,
	Jim Quinlan <jim2101024@gmail.com>,
	linux-mtd@lists.infradead.org,
	Brian Norris <computersforpeace@gmail.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Matthew Creech <mlcreech@gmail.com>
Subject: [PATCH 08/14] mtd: nand: remove gotos in `check_create()'
Date: Wed, 7 Sep 2011 13:13:35 -0700	[thread overview]
Message-ID: <1315426421-16243-9-git-send-email-computersforpeace@gmail.com> (raw)
In-Reply-To: <1315426421-16243-1-git-send-email-computersforpeace@gmail.com>

This is a second step in restructuring `check_create()'. When we don't
rely on goto statements for our main functionality, the code will become
a little easier to manipulate.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/nand/nand_bbt.c |   39 +++++++++++++++++++++------------------
 1 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 6b5b2c0..9d4f889 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -875,7 +875,7 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b
  */
 static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
 {
-	int i, chips, writeops, chipsel, res;
+	int i, chips, writeops, create, chipsel, res;
 	struct nand_chip *this = mtd->priv;
 	struct nand_bbt_descr *td = this->bbt_td;
 	struct nand_bbt_descr *md = this->bbt_md;
@@ -889,6 +889,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
 
 	for (i = 0; i < chips; i++) {
 		writeops = 0;
+		create = 0;
 		rd = NULL;
 		rd2 = NULL;
 		/* Per chip or per device? */
@@ -896,8 +897,8 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
 		/* Mirrored table available? */
 		if (md) {
 			if (td->pages[i] == -1 && md->pages[i] == -1) {
+				create = 1;
 				writeops = 0x03;
-				goto create;
 			} else if (td->pages[i] == -1) {
 				rd = md;
 				td->version[i] = md->version[i];
@@ -921,25 +922,27 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
 			}
 		} else {
 			if (td->pages[i] == -1) {
+				create = 1;
 				writeops = 0x01;
-				goto create;
+			} else {
+				rd = td;
 			}
-			rd = td;
 		}
-		goto writecheck;
-	create:
-		/* Create the bad block table by scanning the device? */
-		if (!(td->options & NAND_BBT_CREATE))
-			continue;
 
-		/* Create the table in memory by scanning the chip(s) */
-		if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY))
-			create_bbt(mtd, buf, bd, chipsel);
+		if (create) {
+			/* Create the bad block table by scanning the device? */
+			if (!(td->options & NAND_BBT_CREATE))
+				continue;
+
+			/* Create the table in memory by scanning the chip(s) */
+			if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY))
+				create_bbt(mtd, buf, bd, chipsel);
+
+			td->version[i] = 1;
+			if (md)
+				md->version[i] = 1;
+		}
 
-		td->version[i] = 1;
-		if (md)
-			md->version[i] = 1;
-	writecheck:
 		/* Read back first? */
 		if (rd)
 			read_abs_bbt(mtd, buf, rd, chipsel);
-- 
1.7.5.4

  parent reply	other threads:[~2011-09-07 20:17 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-07 20:13 [PATCH 00/14] mtd: nand: improve flash-based BBT robustness Brian Norris
2011-09-07 20:13 ` [PATCH 01/14] mtd: nand: refactor scanning code Brian Norris
2011-09-11 13:58   ` Artem Bityutskiy
2011-09-07 20:13 ` [PATCH 02/14] mtd: nand: do not ignore all ECC errors Brian Norris
2011-09-11 13:58   ` Artem Bityutskiy
2011-09-07 20:13 ` [PATCH 03/14] mtd: define `is_ecc_error()' macros Brian Norris
2011-09-11 13:57   ` Artem Bityutskiy
2011-09-19  4:14     ` Artem Bityutskiy
2011-09-19 18:43       ` Brian Norris
2011-09-20  7:19         ` Artem Bityutskiy
2011-09-21  1:30           ` [PATCH v2 03/14] mtd: define `mtd_is_*()' functions Brian Norris
2011-09-21  1:40           ` [PATCH 03/14] mtd: define `is_ecc_error()' macros Brian Norris
2011-09-21  6:24             ` Artem Bityutskiy
2011-09-07 20:13 ` [PATCH 04/14] mtd: utilize " Brian Norris
2011-09-21  1:34   ` [PATCH v2 04/14] mtd: utilize `mtd_is_*()' functions Brian Norris
2011-09-07 20:13 ` [PATCH 05/14] mtd: nand: remove unnecessary variable Brian Norris
2011-09-11 13:58   ` Artem Bityutskiy
2011-09-07 20:13 ` [PATCH 06/14] mtd: nand: fix style Brian Norris
2011-09-11 14:00   ` Artem Bityutskiy
2011-09-07 20:13 ` [PATCH 07/14] mtd: nand: begin restructuring check_create Brian Norris
2011-09-07 20:13 ` Brian Norris [this message]
2011-09-07 20:13 ` [PATCH 09/14] mtd: nand: report ECC errors properly when reading BBT Brian Norris
2011-09-21  1:35   ` [PATCH v2 " Brian Norris
2011-09-07 20:13 ` [PATCH 10/14] mtd: nand: scrub BBT on ECC errors Brian Norris
2011-09-21  1:35   ` [PATCH v2 " Brian Norris
2011-09-07 20:13 ` [PATCH 11/14] mtd: nand: wait to set BBT version Brian Norris
2011-09-21  1:35   ` [PATCH v2 " Brian Norris
2011-09-07 20:13 ` [PATCH 12/14] mtd: nand: do not scan bad blocks with NAND_BBT_NO_OOB set Brian Norris
2011-09-21  1:36   ` [PATCH v2 " Brian Norris
2011-09-07 20:13 ` [PATCH 13/14] mtd: nand: invalidate cache on unaligned reads Brian Norris
2011-09-07 20:13 ` [PATCH 14/14] mtd: nand: switch `check_pattern()' to standard `memcmp()' Brian Norris

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