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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-02-04 09:26:35 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-05-04 14:48:52 -0700
commitf55131145b8d16d942ddb363c3e1b72cf4775384 (patch)
tree9e5a45b62a4761d03cee52331c0a7d0471ff4b18 /drivers/rtc
parent11dd7f9a1ed13794cc77bd144b3aa9dd17c4030f (diff)
rtc: max77686: Properly handle regmap_irq_get_virq() error code
commit fb166ba1d7f0a662f7332f4ff660a0d6f4d76915 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: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: 6f1c1e71d933 ("mfd: max77686: Convert to use regmap_irq") Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-max77686.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index 7184a0eda793..725dccae24e7 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -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;
}