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 <[email protected]> Cc: Lei Wen <[email protected]> Cc: Haojian Zhuang <[email protected]> Cc: David Woodhouse <[email protected]> Cc: [email protected] --- drivers/mtd/nand/pxa3xx_nand.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 0c6ed72..60167d1 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -687,6 +687,8 @@ 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++; } -- 1.7.5.1 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
