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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-05-05 08:33:56 +0300 |
|---|---|---|
| committer | Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> | 2017-05-15 22:56:18 +0300 |
| commit | 05d090f00203bdcf722b9cb6d5ac57c165e2c95c (patch) | |
| tree | 5afead15bd3a733bdd527419d2d60d47c581098f /drivers/mtd | |
| parent | ddd0503e4d780607865950e14f215bf8660ed683 (diff) | |
| download | linux-05d090f00203bdcf722b9cb6d5ac57c165e2c95c.tar.xz | |
mtd: spi-nor: Potential oops on error path in quad_enable()
Before commit cff959958832 ("mtd: spi-nor: introduce SPI 1-2-2 and SPI
1-4-4 protocols") then we treated 1 as -EINVAL in the caller but after
that commit we changed to propagate the return. My static checker
complains that it's eventually passed to an ERR_PTR() and later
dereferenced, but I'm not totally certain if that's true. Regardless,
returning 1 is wrong.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 060a59e716be..eef55b597ec7 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -1389,8 +1389,9 @@ static int macronix_quad_enable(struct spi_nor *nor) write_sr(nor, val | SR_QUAD_EN_MX); - if (spi_nor_wait_till_ready(nor)) - return 1; + ret = spi_nor_wait_till_ready(nor); + if (ret) + return ret; ret = read_sr(nor); if (!(ret > 0 && (ret & SR_QUAD_EN_MX))) { |