[omap35xx] Add patch to correct sub-page alignment

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26274 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/omap35xx/patches-2.6.36/004-nand_subpage_align.patch b/target/linux/omap35xx/patches-2.6.36/004-nand_subpage_align.patch
new file mode 100644 (file)
index 0000000..4bb854d
--- /dev/null
+++ b/target/linux/omap35xx/patches-2.6.36/004-nand_subpage_align.patch
@@ -0,0 +1,22 @@
+diff -urN linux-2.6.38.old/drivers/mtd/nand/omap2.c linux-2.6.38/drivers/mtd/nand/omap2.c
+--- linux-2.6.38.old/drivers/mtd/nand/omap2.c  2011-03-15 02:20:32.000000000 +0100
++++ linux-2.6.38/drivers/mtd/nand/omap2.c      2011-03-21 15:05:21.000000000 +0100
+@@ -245,6 +245,18 @@
+       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)