| Message ID | 1320680611-29448-5-git-send-email-zonque@gmail.com |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index f08fae9..063cb19 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 mtd->ecc_stats.failed++; }
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 <zonque@gmail.com> Acked-by: Lei Wen <leiwen@marvell.com> Cc: Haojian Zhuang <haojian.zhuang@marvell.com> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org [2.6.38+] Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> --- drivers/mtd/nand/pxa3xx_nand.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)