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authorJohn Crispin <john@phrozen.org>2016-06-07 20:33:35 +0200
committerJohn Crispin <john@phrozen.org>2016-06-13 22:51:42 +0200
commit46cecfd6d727f398b568080655a77ea07308053b (patch)
tree09ec2303ba12556ce3276ae80534d5f9469f77c2 /target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch
parent53147c2237231842b4d185f69c2bc0d79aff8b85 (diff)
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ipg806x: set v4.4 as default
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch')
-rw-r--r--target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch84
1 files changed, 0 insertions, 84 deletions
diff --git a/target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch b/target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch
deleted file mode 100644
index 3fb47850fc..0000000000
--- a/target/linux/ipq806x/patches-3.18/161-mtd-nand-Create-a-BBT-flag-to-access-bad-block-markers-in-raw-mode.patch
+++ /dev/null
@@ -1,84 +0,0 @@
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-Subject: [v3,
- 1/5] mtd: nand: Create a BBT flag to access bad block markers in raw
- mode
-From: Archit Taneja <architt@codeaurora.org>
-X-Patchwork-Id: 6927081
-Message-Id: <1438578498-32254-2-git-send-email-architt@codeaurora.org>
-To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
- cernekee@gmail.com, computersforpeace@gmail.com
-Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
- sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
- Archit Taneja <architt@codeaurora.org>
-Date: Mon, 3 Aug 2015 10:38:14 +0530
-
-Some controllers can access the factory bad block marker from OOB only
-when they read it in raw mode. When ECC is enabled, these controllers
-discard reading/writing bad block markers, preventing access to them
-altogether.
-
-The bbt driver assumes MTD_OPS_PLACE_OOB when scanning for bad blocks.
-This results in the nand driver's ecc->read_oob() op to be called, which
-works with ECC enabled.
-
-Create a new BBT option flag that tells nand_bbt to force the mode to
-MTD_OPS_RAW. This would result in the correct op being called for the
-underlying nand controller driver.
-
-Reviewed-by: Andy Gross <agross@codeaurora.org>
-Signed-off-by: Archit Taneja <architt@codeaurora.org>
-
----
-drivers/mtd/nand/nand_base.c | 6 +++++-
- drivers/mtd/nand/nand_bbt.c | 6 +++++-
- include/linux/mtd/bbm.h | 7 +++++++
- 3 files changed, 17 insertions(+), 2 deletions(-)
-
---- a/drivers/mtd/nand/nand_base.c
-+++ b/drivers/mtd/nand/nand_base.c
-@@ -396,7 +396,11 @@ static int nand_default_block_markbad(st
- } else {
- ops.len = ops.ooblen = 1;
- }
-- ops.mode = MTD_OPS_PLACE_OOB;
-+
-+ if (unlikely(chip->bbt_options & NAND_BBT_ACCESS_BBM_RAW))
-+ ops.mode = MTD_OPS_RAW;
-+ else
-+ ops.mode = MTD_OPS_PLACE_OOB;
-
- /* Write to first/last page(s) if necessary */
- if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
---- a/drivers/mtd/nand/nand_bbt.c
-+++ b/drivers/mtd/nand/nand_bbt.c
-@@ -423,7 +423,11 @@ static int scan_block_fast(struct mtd_in
- ops.oobbuf = buf;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
-- ops.mode = MTD_OPS_PLACE_OOB;
-+
-+ if (unlikely(bd->options & NAND_BBT_ACCESS_BBM_RAW))
-+ ops.mode = MTD_OPS_RAW;
-+ else
-+ ops.mode = MTD_OPS_PLACE_OOB;
-
- for (j = 0; j < numpages; j++) {
- /*
---- a/include/linux/mtd/bbm.h
-+++ b/include/linux/mtd/bbm.h
-@@ -116,6 +116,13 @@ struct nand_bbt_descr {
- #define NAND_BBT_NO_OOB_BBM 0x00080000
-
- /*
-+ * Force MTD_OPS_RAW mode when trying to access bad block markes from OOB. To
-+ * be used by controllers which can access BBM only when ECC is disabled, i.e,
-+ * when in RAW access mode
-+ */
-+#define NAND_BBT_ACCESS_BBM_RAW 0x00100000
-+
-+/*
- * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr
- * was allocated dynamicaly and must be freed in nand_release(). Has no meaning
- * in nand_chip.bbt_options.