1 files changed, 63 insertions, 0 deletions

diff --git a/extras/recipes-kernel/linux/linux-omap/base/0009-MTD-silence-ecc-errors-on-mtdblock0.patch b/extras/recipes-kernel/linux/linux-omap/base/0009-MTD-silence-ecc-errors-on-mtdblock0.patch
new file mode 100644
index 00000000..e665e23a
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap/base/0009-MTD-silence-ecc-errors-on-mtdblock0.patch
@@ -0,0 +1,63 @@
+From 8b0c56b910811acd23c15bed273b3dbd959ef96a Mon Sep 17 00:00:00 2001
+From: Steve Sakoman <steve@sakoman.com>
+Date: Mon, 26 Apr 2010 11:17:26 -0700
+Subject: [PATCH 09/28] MTD: silence ecc errors on mtdblock0
+
+mtdblock0 is the x-load partition, which uses hw ecc
+this confuses linux, which uses sw ecc
+this patch silences ecc error messages when linux peeks into mtdblock0
+* not for upstream submission *
+---
+ block/blk-core.c            |    7 ++++---
+ drivers/mtd/nand/nand_ecc.c |    2 +-
+ fs/buffer.c                 |    3 ++-
+ 3 files changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/block/blk-core.c b/block/blk-core.c
+index 4ce953f..1ef9a01 100644
+--- a/block/blk-core.c
++++ b/block/blk-core.c
+@@ -2028,9 +2028,10 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
+ 
+        if (error && req->cmd_type == REQ_TYPE_FS &&
+            !(req->cmd_flags & REQ_QUIET)) {
+-               printk(KERN_ERR "end_request: I/O error, dev %s, sector %llu\n",
+-                               req->rq_disk ? req->rq_disk->disk_name : "?",
+-                               (unsigned long long)blk_rq_pos(req));
++               if (req->rq_disk && (strcmp(req->rq_disk->disk_name, "mtdblock0") != 0))
++                               printk(KERN_ERR "end_request: I/O error, dev %s, sector %llu\n",
++                                       req->rq_disk ? req->rq_disk->disk_name : "?",
++                                       (unsigned long long)blk_rq_pos(req));
+        }
+ 
+        blk_account_io_completion(req, nr_bytes);
+diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
+index 271b8e7..5924ba7 100644
+--- a/drivers/mtd/nand/nand_ecc.c
++++ b/drivers/mtd/nand/nand_ecc.c
+@@ -507,7 +507,7 @@ int __nand_correct_data(unsigned char *buf,
+        if ((bitsperbyte[b0] + bitsperbyte[b1] + bitsperbyte[b2]) == 1)
+                return 1;       /* error in ecc data; no action needed */
+ 
+-       printk(KERN_ERR "uncorrectable error : ");
++//     printk(KERN_ERR "uncorrectable error : ");
+        return -1;
+ }
+ EXPORT_SYMBOL(__nand_correct_data);
+diff --git a/fs/buffer.c b/fs/buffer.c
+index 5930e38..06a00d5 100644
+--- a/fs/buffer.c
++++ b/fs/buffer.c
+@@ -114,7 +114,8 @@ static int quiet_error(struct buffer_head *bh)
+ static void buffer_io_error(struct buffer_head *bh)
+ {
+        char b[BDEVNAME_SIZE];
+-       printk(KERN_ERR "Buffer I/O error on device %s, logical block %Lu\n",
++       if (strcmp(bdevname(bh->b_bdev, b), "mtdblock0") != 0)
++               printk(KERN_ERR "Buffer I/O error on device %s, logical block %Lu\n",
+                        bdevname(bh->b_bdev, b),
+                        (unsigned long long)bh->b_blocknr);
+ }
+-- 
+1.6.6.1
+