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Diffstat (limited to 'extras/recipes-kernel/linux/linux-omap-psp-2.6.32/0012-MTD-NAND-omap2-proper-fix-for-subpage-read-ECC-error.patch')
-rw-r--r--extras/recipes-kernel/linux/linux-omap-psp-2.6.32/0012-MTD-NAND-omap2-proper-fix-for-subpage-read-ECC-error.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/0012-MTD-NAND-omap2-proper-fix-for-subpage-read-ECC-error.patch b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/0012-MTD-NAND-omap2-proper-fix-for-subpage-read-ECC-error.patch
new file mode 100644
index 00000000..a8f3d8b4
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap-psp-2.6.32/0012-MTD-NAND-omap2-proper-fix-for-subpage-read-ECC-error.patch
@@ -0,0 +1,35 @@
+From 7d8868d73fdd95eb928f54f881978590643e50cc Mon Sep 17 00:00:00 2001
+From: Steve Sakoman <steve@sakoman.com>
+Date: Thu, 31 Dec 2009 07:05:02 -0800
+Subject: [PATCH 12/45] MTD: NAND: omap2: proper fix for subpage read ECC errors
+
+---
+ drivers/mtd/nand/omap2.c | 11 +++++++----
+ 1 files changed, 7 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
+index 08c193c..9b185b0 100644
+--- a/drivers/mtd/nand/omap2.c
++++ b/drivers/mtd/nand/omap2.c
+@@ -295,11 +295,14 @@ static void omap_read_buf_pref(struct mtd_info *mtd, u_char *buf, int len)
+ u32 *p = (u32 *)buf;
+
+ /* take care of subpage reads */
+- for (; len % 4 != 0; ) {
+- *buf++ = __raw_readb(info->nand.IO_ADDR_R);
+- len--;
++ if (len % 4) {
++ if (info->nand.options & NAND_BUSWIDTH_16)
++ omap_read_buf16(mtd, buf, len % 4);
++ else
++ omap_read_buf8(mtd, buf, len % 4);
++ p = (u32 *) (buf + len % 4);
++ len -= len % 4;
+ }
+- p = (u32 *) buf;
+
+ /* configure and start prefetch transfer */
+ ret = gpmc_prefetch_enable(info->gpmc_cs, 0x0, len, 0x0);
+--
+1.6.6.1
+