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| author | Gustavo A. R. Silva <garsilva@embeddedor.com> | 2017-05-24 12:18:52 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2017-07-06 10:29:11 +0300 |
| commit | 7b55033fbed07bad695ba744db3070c1cc351dc4 (patch) | |
| tree | 686775423c95b19f1b7ee2e0f608ddc1cdbbe037 | |
| parent | 800e54558b0f1444e480ad4eb8d4a774899875d8 (diff) | |
| download | linux-7b55033fbed07bad695ba744db3070c1cc351dc4.tar.xz | |
mfd: wm831x-spi: Add NULL check before pointer dereference
Add NULL check before dereferencing pointer of_id in order to avoid
a potential NULL pointer dereference.
Addresses-Coverity-ID: 1408830
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
| -rw-r--r-- | drivers/mfd/wm831x-spi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c index c332e2885b26..018ce652ae57 100644 --- a/drivers/mfd/wm831x-spi.c +++ b/drivers/mfd/wm831x-spi.c @@ -34,6 +34,10 @@ static int wm831x_spi_probe(struct spi_device *spi) if (spi->dev.of_node) { of_id = of_match_device(wm831x_of_match, &spi->dev); + if (!of_id) { + dev_err(&spi->dev, "Failed to match device\n"); + return -ENODEV; + } type = (enum wm831x_parent)of_id->data; } else { type = (enum wm831x_parent)id->driver_data; |