The first DT gpio is necessary for this driver, but errors returned for of_get_gpio are ignored.
This patch adds a return value check for the first of_get_gpio. Signed-off-by: Markus Pargmann <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> --- drivers/w1/masters/w1-gpio.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index f54ece2..ae53e88 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; -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
