Commit b7b6727d authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Kamal Mostafa

rtc: max77686: Properly handle regmap_irq_get_virq() error code

commit fb166ba1 upstream.

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>
Signed-off-by: default avatarKamal Mostafa <kamal@canonical.com>
parent f07f1a07
......@@ -465,7 +465,7 @@ static int max77686_rtc_probe(struct platform_device *pdev)
info->virq = regmap_irq_get_virq(max77686->rtc_irq_data,
MAX77686_RTCIRQ_RTCA1);
if (!info->virq) {
if (info->virq <= 0) {
ret = -ENXIO;
goto err_rtc;
}
......
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