path: root/drivers/mtd
diff options
authorDaniel Mack <>2011-06-07 03:01:07 -0700
committerGreg Kroah-Hartman <>2011-11-11 09:44:46 -0800
commit4d25350da904f3e4d8f0da1e41a4d9807bb3525b (patch)
tree07e6919efdd1408d76ecf457f73c980077786ff9 /drivers/mtd
parent33e73819e7e48d76d40e292be8d4213684a3369f (diff)
mtd: pxa3xx_nand: Fix blank page ECC mismatch
commit 543e32d5ff165d0d68deedb0e3557478c7c36a4a upstream. This bug was introduced in f8155a40 ("mtd: pxa3xx_nand: rework irq logic") and causes the PXA3xx NAND controller fail to operate with NAND flash that has empty pages. According to the comment in this block, the hardware controller will report a double-bit error for empty pages, which can and must be ignored. This patch restores the original behaviour of the driver. Signed-off-by: Daniel Mack <> Acked-by: Lei Wen <> Cc: Haojian Zhuang <> Cc: David Woodhouse <> Signed-off-by: Artem Bityutskiy <> Signed-off-by: Greg Kroah-Hartman <>
Diffstat (limited to 'drivers/mtd')
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index faa0edd28256..30689cc2b3c7 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -685,6 +685,8 @@ static int pxa3xx_nand_read_page_hwecc(struct mtd_info *mtd,
* OOB, ignore such double bit errors
if (is_buf_blank(buf, mtd->writesize))
+ info->retcode = ERR_NONE;
+ else