From: Boris BREZILLON Date: Tue, 20 Oct 2015 20:16:01 +0000 (+0200) Subject: mtd: nand: sunxi: avoid retrieving data before ECC pass X-Git-Tag: archive/raspbian/4.9.13-1+rpi1~10^2~3121^2~170 X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=28ec8a864f4b67bb801aede7919391531612c7dd;p=linux-4.9.git mtd: nand: sunxi: avoid retrieving data before ECC pass The in-band data are copied twice: before ECC correction and after the ECC engine has fixed all the fixable bitflips. Drop the useless memcpy_fromio operation by passing a NULL pointer when calling sunxi_nfc_read_buf(). Signed-off-by: Boris Brezillon Signed-off-by: Brian Norris --- diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c index 96f7370a404f..824711845c44 100644 --- a/drivers/mtd/nand/sunxi_nand.c +++ b/drivers/mtd/nand/sunxi_nand.c @@ -586,7 +586,7 @@ static int sunxi_nfc_hw_ecc_read_chunk(struct mtd_info *mtd, if (*cur_off != data_off) nand->cmdfunc(mtd, NAND_CMD_RNDOUT, data_off, -1); - sunxi_nfc_read_buf(mtd, data, ecc->size); + sunxi_nfc_read_buf(mtd, NULL, ecc->size); if (data_off + ecc->size != oob_off) nand->cmdfunc(mtd, NAND_CMD_RNDOUT, oob_off, -1);