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path: root/drivers/w1/masters/w1-gpio.c
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Diffstat (limited to 'drivers/w1/masters/w1-gpio.c')
-rw-r--r--drivers/w1/masters/w1-gpio.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
index f54ece268c98..ae53e8832845 100644
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -58,6 +58,7 @@ static int w1_gpio_probe_dt(struct platform_device *pdev)
{
struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
struct device_node *np = pdev->dev.of_node;
+ int gpio;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@@ -66,7 +67,11 @@ static int w1_gpio_probe_dt(struct platform_device *pdev)
if (of_get_property(np, "linux,open-drain", NULL))
pdata->is_open_drain = 1;
- pdata->pin = of_get_gpio(np, 0);
+ gpio = of_get_gpio(np, 0);
+ if (gpio < 0)
+ return gpio;
+ pdata->pin = gpio;
+
pdata->ext_pullup_enable_pin = of_get_gpio(np, 1);
pdev->dev.platform_data = pdata;