On 08/02/2018 01:03 AM, Kurt Kanzenbach wrote: > From: Darwin Dingel <[email protected]> > > This is a fix made for the fsl_ifc_nand driver on linux kernel by > Pavel Machek and is applied to uboot. It is currently on applied on > linux-mtd. > > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.kernel.org%2Fpatch%2F9758117%2F&data=02%7C01%7Cyork.sun%40nxp.com%7C79aca70c61e943b59b1d08d5f84e77eb%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636687938268644852&sdata=PjrH%2FF6LyGA%2BpVjHfqQpn4qhvJKeRHG%2Fb3434wuQy3o%3D&reserved=0 > > IFC always raises ECC errors on erased pages. It is only ignored when > the buffer is checked for all 0xFF by is_blank(). The problem is a > single bitflip will cause is_blank() and then mtd_read to fail. The fix > makes use of nand_check_erased_ecc_chunk() to check for empty pages > instead of is_blank(). This also makes sure that reads are made at ECC > page size granularity to get a proper bitflip count. If the number of > bitflips does not exceed the ECC strength, the page is considered empty > and the bitflips will be corrected when data is sent to the higher > layers (e.g. ubi). > > Signed-off-by: Darwin Dingel <[email protected]> > Cc: Pavel Machek <[email protected]> > Cc: Scott Wood <[email protected]> > Acked-by: Pavel Machek <[email protected]> > [Kurt: Replaced dev_err by printf due to compiler warnings] > Tested-by: Kurt Kanzenbach <[email protected]> > Signed-off-by: Kurt Kanzenbach <[email protected]> > --- > drivers/mtd/nand/fsl_ifc_nand.c | 69 > +++++++++++++++++++++++------------------ > 1 file changed, 39 insertions(+), 30 deletions(-)
Applied to fsl-qoriq master, awaiting upstream. Thanks. York _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
