[3/3,NAND,OMAP] : Fixing issue in oamp nand driver in prefetch mode read

Commit Message

vimal singh Jan. 6, 2010, 2:06 p.m. UTC

None

Patch

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 16120e2..7df303a 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 */