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authorGustavo A. R. Silva2017-05-24 04:26:23 -0500
committerLee Jones2017-07-06 08:29:11 +0100
commit800e54558b0f1444e480ad4eb8d4a774899875d8 (patch)
treec1b6ee236059d97f42132d214a3229eee2f4ffef /drivers/mfd
parent87d284443d071dc70344dda4b2fb43723686acdb (diff)
mfd: wm831x-i2c: 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: 1408829 Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm831x-i2c.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c
index 781af060f32d..22f7054d1b28 100644
--- a/drivers/mfd/wm831x-i2c.c
+++ b/drivers/mfd/wm831x-i2c.c
@@ -37,6 +37,10 @@ static int wm831x_i2c_probe(struct i2c_client *i2c,
if (i2c->dev.of_node) {
of_id = of_match_device(wm831x_of_match, &i2c->dev);
+ if (!of_id) {
+ dev_err(&i2c->dev, "Failed to match device\n");
+ return -ENODEV;
+ }
type = (enum wm831x_parent)of_id->data;
} else {
type = (enum wm831x_parent)id->driver_data;