of_match_device could return NULL, and so can cause a NULL
pointer dereference later.
Signed-off-by: Shailendra Verma <shailendra.v@xxxxxxxxxxx>
---
drivers/iio/adc/mxs-lradc.c | 14 ++++++++++----
drivers/iio/adc/rockchip_saradc.c | 4 ++++
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/mxs-lradc.c b/drivers/iio/adc/mxs-lradc.c
index b84d37c..4308a59 100644
--- a/drivers/iio/adc/mxs-lradc.c
+++ b/drivers/iio/adc/mxs-lradc.c
@@ -1570,10 +1570,8 @@ static int mxs_lradc_probe_touchscreen(struct mxs_lradc *lradc,
static int mxs_lradc_probe(struct platform_device *pdev)
{
- const struct of_device_id *of_id =
- of_match_device(mxs_lradc_dt_ids, &pdev->dev);
- const struct mxs_lradc_of_config *of_cfg =
- &mxs_lradc_of_config[(enum mxs_lradc_id)of_id->data];
+ const struct of_device_id *of_id;
+ const struct mxs_lradc_of_config *of_cfg;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct mxs_lradc *lradc;
@@ -1583,6 +1581,14 @@ static int mxs_lradc_probe(struct platform_device *pdev)
int i, s;
u64 scale_uv;
+ of_id = of_match_device(mxs_lradc_dt_ids, &pdev->dev);
+ if (!of_id) {
+ dev_err(&pdev->dev, "Error: No device match found\n");
+ return -ENODEV;
+ }
+
+ of_cfg = &mxs_lradc_of_config[(enum mxs_lradc_id)of_id->data];
+
/* Allocate the IIO device. */
iio = devm_iio_device_alloc(dev, sizeof(*lradc));
if (!iio) {
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 85d7012..08dfb43 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -224,6 +224,10 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
info = iio_priv(indio_dev);
match = of_match_device(rockchip_saradc_match, &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "Error: No device match found\n");
+ return -ENODEV;
+ }
info->data = match->data;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
