of_match_device could return NULL, and so can cause a NULL
pointer dereference later.
Signed-off-by: Shailendra Verma <shailendra.v@xxxxxxxxxxx>
---
drivers/pwm/pwm-sun4i.c | 4 ++++
drivers/pwm/pwm-tegra.c | 5 +++++
2 files changed, 9 insertions(+)
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index b0803f6..9b5c6fe 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -321,6 +321,10 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
const struct of_device_id *match;
match = of_match_device(sun4i_pwm_dt_ids, &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "Error: No device match found\n");
+ return -ENODEV;
+ }
pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
if (!pwm)
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index e464784..a5eb224 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -185,6 +185,11 @@ static int tegra_pwm_probe(struct platform_device *pdev)
return -ENOMEM;
pwm->soc = of_device_get_match_data(&pdev->dev);
+ if (!pwm->soc) {
+ dev_err(&pdev->dev, "no device match found\n");
+ return -ENODEV;
+ }
+
pwm->dev = &pdev->dev;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
--
1.7.9.5
--
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