diff options
| author | Wentao Liang <vulab@iscas.ac.cn> | 2025-04-02 15:56:23 +0800 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-04-07 09:02:49 +0200 |
| commit | b79fe1829975556854665258cf4d2476784a89db (patch) | |
| tree | e22c4997c00ca227f38a853918d24a41945d66c8 | |
| parent | d027951dc85cb2e15924c980dc22a6754d100c7c (diff) | |
mtd: rawnand: Add status chack in r852_ready()
In r852_ready(), the dev get from r852_get_dev() need to be checked.
An unstable device should not be ready. A proper implementation can
be found in r852_read_byte(). Add a status check and return 0 when it is
unstable.
Fixes: 50a487e7719c ("mtd: rawnand: Pass a nand_chip object to chip->dev_ready()")
Cc: stable@vger.kernel.org # v4.20+
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
| -rw-r--r-- | drivers/mtd/nand/raw/r852.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/r852.c b/drivers/mtd/nand/raw/r852.c index b07c2f8b4035..918974d088cf 100644 --- a/drivers/mtd/nand/raw/r852.c +++ b/drivers/mtd/nand/raw/r852.c @@ -387,6 +387,9 @@ static int r852_wait(struct nand_chip *chip) static int r852_ready(struct nand_chip *chip) { struct r852_device *dev = r852_get_dev(nand_to_mtd(chip)); + if (dev->card_unstable) + return 0; + return !(r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_BUSY); } |