1 files changed, 35 insertions, 0 deletions

diff --git a/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0026-mtd-nand-omap2-Force-all-buffer-reads-to-u32-alignme.patch b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0026-mtd-nand-omap2-Force-all-buffer-reads-to-u32-alignme.patch
new file mode 100644
index 00000000..5e060231
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0026-mtd-nand-omap2-Force-all-buffer-reads-to-u32-alignme.patch
@@ -0,0 +1,35 @@
+From 048c2b85c12ac4aa8cd82201e1ade332557e4380 Mon Sep 17 00:00:00 2001
+From: Charles Manning <manningc2@actrix.gen.nz>
+Date: Thu, 16 Dec 2010 20:35:56 -0800
+Subject: [PATCH 26/32] mtd: nand: omap2: Force all buffer reads to u32 alignment
+
+---
+ drivers/mtd/nand/omap2.c |   12 ++++++++++++
+ 1 files changed, 12 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
+index bb89c65..832f111 100644
+--- a/drivers/mtd/nand/omap2.c
++++ b/drivers/mtd/nand/omap2.c
+@@ -247,6 +247,18 @@ static void omap_read_buf_pref(struct mtd_info *mtd, u_char *buf, int len)
+        int ret = 0;
+        u32 *p = (u32 *)buf;
+ 
++       /* u32 align the buffer and read */
++       /* NB: This assumes the buf ptr can be aligned *down* which is a valid.
++       * Assumption when dealing with ecc buffers etc.
++       */
++       u32 addr = (u32)p;
++
++       int diff = addr & 3;
++       addr -= diff;
++       len += diff;
++       len = (len + 3) & ~3;
++       p = (u32 *)addr;
++
+        /* take care of subpage reads */
+        if (len % 4) {
+                if (info->nand.options & NAND_BUSWIDTH_16)
+-- 
+1.6.6.1
+