linux-kernel - [PATCH 3/8] Input: st1232 - rely on I2C core to configure wakeup interrupt

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191022195622.66976-4-dmitry.torokhov@gmail.com>
Date:   Tue, 22 Oct 2019 12:56:17 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Martin Kepplinger <martink@...teo.de>
Cc:     Dixit Parmar <dixitparmar19@...il.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Matthias Fend <matthias.fend@...fvision.net>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/8] Input: st1232 - rely on I2C core to configure wakeup interrupt

When I2C client is created with I2C_CLIENT_WAKE flag (which happens
either because we have "wakeup-source" device property or the flag
was passed in when creating an I2C client manually), I2C core will
take care of configuring interrupt as wakeup source on suspend.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

 drivers/input/touchscreen/st1232.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index f1b97075aa9b..bb116f41f1c0 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -284,12 +284,10 @@ static int __maybe_unused st1232_ts_suspend(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev)) {
-		enable_irq_wake(client->irq);
-	} else {
-		disable_irq(client->irq);
+	disable_irq(client->irq);
+
+	if (!device_may_wakeup(&client->dev))
 		st1232_ts_power(ts, false);
-	}
 
 	return 0;
 }
@@ -299,12 +297,10 @@ static int __maybe_unused st1232_ts_resume(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev)) {
-		disable_irq_wake(client->irq);
-	} else {
+	if (!device_may_wakeup(&client->dev))
 		st1232_ts_power(ts, true);
-		enable_irq(client->irq);
-	}
+
+	enable_irq(client->irq);
 
 	return 0;
 }
-- 
2.23.0.866.gb869b98d4c-goog