linux-kernel - [PATCH AUTOSEL 4.19 425/671] rtc: pcf8563: Fix interrupt trigger method

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Message-Id: <20200116170509.12787-162-sashal@kernel.org>
Date:   Thu, 16 Jan 2020 12:01:03 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Sasha Levin <sashal@...nel.org>, linux-rtc@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 425/671] rtc: pcf8563: Fix interrupt trigger method

From: Chen-Yu Tsai <wens@...e.org>

[ Upstream commit 65f662cbf829834fa4d94190eb7691e5a9cb92d8 ]

The PCF8563 datasheet says the interrupt line is active low and stays
active until the events are cleared, i.e. a level trigger interrupt.

Fix the flags used to request the interrupt.

Fixes: ede3e9d47cca ("drivers/rtc/rtc-pcf8563.c: add alarm support")
Signed-off-by: Chen-Yu Tsai <wens@...e.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/rtc/rtc-pcf8563.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 3efc86c25d27..e358313466f1 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -605,7 +605,7 @@ static int pcf8563_probe(struct i2c_client *client,
 	if (client->irq > 0) {
 		err = devm_request_threaded_irq(&client->dev, client->irq,
 				NULL, pcf8563_irq,
-				IRQF_SHARED|IRQF_ONESHOT|IRQF_TRIGGER_FALLING,
+				IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW,
 				pcf8563_driver.driver.name, client);
 		if (err) {
 			dev_err(&client->dev, "unable to request IRQ %d\n",
-- 
2.20.1