+++ /dev/null
-From d658c21d6697293a928434fd6ac19264b5a8948d Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
-Date: Fri, 30 Jan 2015 08:25:54 +0100
-Subject: [PATCH] mtd: bcm47xxpart: scan whole flash on ARCH_BCM_5301X
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
----
- drivers/mtd/bcm47xxpart.c | 6 ++++++
- 1 file changed, 6 insertions(+)
-
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -120,9 +120,15 @@ static int bcm47xxpart_parse(struct mtd_
- /* Parse block by block looking for magics */
- for (offset = 0; offset <= master->size - blocksize;
- offset += blocksize) {
-+#ifndef CONFIG_ARCH_BCM_5301X
-+ /*
-+ * ARM routers may have partitions in higher memory. E.g.
-+ * Netgear R8000 has board_data at 0x2600000.
-+ */
- /* Nothing more in higher memory */
- if (offset >= 0x2000000)
- break;
-+#endif
-
- if (curr_part >= BCM47XXPART_MAX_PARTS) {
- pr_warn("Reached maximum number of partitions, scanning stopped!\n");
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 5 Dec 2015 02:03:32 +0100
+Subject: [PATCH] mtd: bcm47xxpart: limit scanned flash area on BCM47XX (MIPS)
+ only
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We allowed using bcm47xxpart on BCM5301X arch with commit:
+9e3afa5f5c7 ("mtd: bcm47xxpart: allow enabling on ARCH_BCM_5301X")
+
+BCM5301X devices may contain some partitions in higher memory, e.g.
+Netgear R8000 has board_data at 0x2600000. To detect them we should
+use size limit on MIPS only.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -118,8 +118,8 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ /* Parse block by block looking for magics */
+ for (offset = 0; offset <= master->size - blocksize;
+ offset += blocksize) {
+- /* Nothing more in higher memory */
+- if (offset >= 0x2000000)
++ /* Nothing more in higher memory on BCM47XX (MIPS) */
++ if (config_enabled(CONFIG_BCM47XX) && offset >= 0x2000000)
+ break;
+
+ if (curr_part >= BCM47XXPART_MAX_PARTS) {
--- /dev/null
+From dfe4b4c732365fc1d83c2d2fd9cc18054ae850b7 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sun, 6 Dec 2015 11:24:05 +0100
+Subject: [PATCH] mtd: bcm47xxpart: don't fail because of bit-flips
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Bit-flip errors may occur on NAND flashes and are harmless. Handle them
+gracefully as read content is still reliable and can be parsed.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 38 ++++++++++++++++++++++----------------
+ 1 file changed, 22 insertions(+), 16 deletions(-)
+
+diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
+index 4450e74..1ab3451 100644
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -66,11 +66,13 @@ static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master,
+ {
+ uint32_t buf;
+ size_t bytes_read;
++ int err;
+
+- if (mtd_read(master, offset, sizeof(buf), &bytes_read,
+- (uint8_t *)&buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, sizeof(buf), &bytes_read,
++ (uint8_t *)&buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ goto out_default;
+ }
+
+@@ -95,6 +97,7 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ int trx_part = -1;
+ int last_trx_part = -1;
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
++ int err;
+
+ /*
+ * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -128,10 +131,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* Read beginning of the block */
+- if (mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
+- &bytes_read, (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
++ &bytes_read, (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -254,10 +258,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* Read middle of the block */
+- if (mtd_read(master, offset + 0x8000, 0x4,
+- &bytes_read, (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset + 0x8000, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -277,10 +282,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ offset = master->size - possible_nvram_sizes[i];
+- if (mtd_read(master, offset, 0x4, &bytes_read,
+- (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while reading at offset 0x%X!\n",
+- offset);
++ err = mtd_read(master, offset, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while reading (offset 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+--
+1.8.4.5
+
projects / openwrt / svn-archive / archive.git / commitdiff