linux-kernel - [PATCH 1/5] rtc: pcf2127: fix a bug when not specify interrupts property

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Date:   Tue, 15 Sep 2020 15:32:09 +0800
From:   Biwen Li <biwen.li@....nxp.com>
To:     alexandre.belloni@...tlin.com, leoyang.li@....com,
        shawnguo@...nel.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        jiafei.pan@....com, linux-rtc@...r.kernel.org,
        Biwen Li <biwen.li@....com>
Subject: [PATCH 1/5] rtc: pcf2127: fix a bug when not specify interrupts property

From: Biwen Li <biwen.li@....com>

Fix a bug when not specify interrupts property in dts
as follows,
    rtc-pcf2127-i2c 1-0051: failed to request alarm irq
    rtc-pcf2127-i2c: probe of 1-0051 failed with error -22

Signed-off-by: Biwen Li <biwen.li@....com>
---
 drivers/rtc/rtc-pcf2127.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index ed6316992cbb..07a5630ec841 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -559,7 +559,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
 	pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */
 	pcf2127->rtc->uie_unsupported = 1;
 
-	if (alarm_irq >= 0) {
+	if (alarm_irq > 0) {
 		ret = devm_request_threaded_irq(dev, alarm_irq, NULL,
 						pcf2127_rtc_irq,
 						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
@@ -570,7 +570,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
 		}
 	}
 
-	if (alarm_irq >= 0 || device_property_read_bool(dev, "wakeup-source")) {
+	if (alarm_irq > 0 || device_property_read_bool(dev, "wakeup-source")) {
 		device_init_wakeup(dev, true);
 		pcf2127->rtc->ops = &pcf2127_rtc_alrm_ops;
 	}
-- 
2.17.1