diff options
| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-02-04 09:26:35 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-04 14:48:52 -0700 |
| commit | f55131145b8d16d942ddb363c3e1b72cf4775384 (patch) | |
| tree | 9e5a45b62a4761d03cee52331c0a7d0471ff4b18 | |
| parent | 11dd7f9a1ed13794cc77bd144b3aa9dd17c4030f (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>
| -rw-r--r-- | drivers/rtc/rtc-max77686.c | 2 |
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; } |