Commit fb166ba1 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Alexandre Belloni

rtc: max77686: Properly handle regmap_irq_get_virq() error code

The regmap_irq_get_virq() can return 0 or -EINVAL in error conditions
but driver checked only for value of 0.

This could lead to a cast of -EINVAL to an unsigned int used as a
interrupt number for devm_request_threaded_irq(). Although this is not
yet fatal (devm_request_threaded_irq() will just fail with -EINVAL) but
might be a misleading when diagnosing errors.
Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: 6f1c1e71 ("mfd: max77686: Convert to use regmap_irq")
Reviewed-by: default avatarJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 1e5813bd
...@@ -667,7 +667,7 @@ static int max77686_rtc_probe(struct platform_device *pdev) ...@@ -667,7 +667,7 @@ static int max77686_rtc_probe(struct platform_device *pdev)
info->virq = regmap_irq_get_virq(max77686->rtc_irq_data, info->virq = regmap_irq_get_virq(max77686->rtc_irq_data,
MAX77686_RTCIRQ_RTCA1); MAX77686_RTCIRQ_RTCA1);
if (!info->virq) { if (info->virq <= 0) {
ret = -ENXIO; ret = -ENXIO;
goto err_rtc; goto err_rtc;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment