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mfd: wm831x-spi: Add NULL check before pointer dereference

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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>
This commit is contained in:
Gustavo A. R. Silva 2017-05-24 04:18:52 -05:00 committed by Lee Jones
parent 800e54558b
commit 7b55033fbe
1 changed files with 4 additions and 0 deletions
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4
drivers/mfd/wm831x-spi.c
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@ -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;