UbiFS + HWECC(?) + BeagleBoard = fail

Commit Message

Charles Manning Dec. 15, 2010, 5:35 p.m. UTC

None

Patch

--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -245,6 +245,18 @@  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 */