[PATCH v2] mtd: nand: mtk: use nand_reset() to reset NAND devices in resume function
Matthias Brugger
matthias.bgg at gmail.com
Thu Nov 2 04:41:41 PDT 2017
On 11/02/2017 03:05 AM, xiaolei.li at mediatek.com wrote:
> From: Xiaolei Li <xiaolei.li at mediatek.com>
>
> Previously, we only select chips and then send reset command to a NAND
> device during resuming nand driver. There is a lack of deselecting chips.
> It is advised to reset and initialize a NAND device using nand_reset().
>
> Signed-off-by: Xiaolei Li <xiaolei.li at mediatek.com>
> ---
Reviewed-by: Matthias Brugger <matthias.bgg at gmail.com>
> drivers/mtd/nand/mtk_nand.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/mtd/nand/mtk_nand.c b/drivers/mtd/nand/mtk_nand.c
> index d86a7d1..6d0101e 100644
> --- a/drivers/mtd/nand/mtk_nand.c
> +++ b/drivers/mtd/nand/mtk_nand.c
> @@ -1540,7 +1540,6 @@ static int mtk_nfc_resume(struct device *dev)
> struct mtk_nfc *nfc = dev_get_drvdata(dev);
> struct mtk_nfc_nand_chip *chip;
> struct nand_chip *nand;
> - struct mtd_info *mtd;
> int ret;
> u32 i;
>
> @@ -1553,11 +1552,8 @@ static int mtk_nfc_resume(struct device *dev)
> /* reset NAND chip if VCC was powered off */
> list_for_each_entry(chip, &nfc->chips, node) {
> nand = &chip->nand;
> - mtd = nand_to_mtd(nand);
> - for (i = 0; i < chip->nsels; i++) {
> - nand->select_chip(mtd, i);
> - nand->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
> - }
> + for (i = 0; i < chip->nsels; i++)
> + nand_reset(nand, i);
> }
>
> return 0;
>
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