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| author |   Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-02-04 09:26:35 +0900 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-02-04 23:44:14 +0100 |
| commit | fb166ba1d7f0a662f7332f4ff660a0d6f4d76915 (patch) | |
| tree | 3d559251aec9b2bc37e4c63095803cd7b542821c /drivers/rtc/rtc-max77686.c | |
| parent | rtc: max77686: Fix unsupported year message (diff) | |
| download | wireguard-linux-fb166ba1d7f0a662f7332f4ff660a0d6f4d76915.tar.xz wireguard-linux-fb166ba1d7f0a662f7332f4ff660a0d6f4d76915.zip | |
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: 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>
Diffstat (limited to 'drivers/rtc/rtc-max77686.c')
| -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 bbb06dd2ee35..d2d1176a1f60 100644 --- a/drivers/rtc/rtc-max77686.c +++ b/drivers/rtc/rtc-max77686.c @@ -667,7 +667,7 @@ 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; } |