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authorDmitry Osipenko <digetx@gmail.com>2021-06-19 00:54:55 +0300
committerGuenter Roeck <linux@roeck-us.net>2021-06-19 04:09:49 -0700
commit4c7f85a321a1ac265159c22a6998ef4f2a60c21d (patch)
tree132ddc0856a3e254c5d1a40be30d46f324bef315 /drivers/hwmon
parent2abdc357c55d9e728f6710cf22618889f16a00f6 (diff)
hwmon: (lm90) Disable interrupt on suspend
I2C accesses are prohibited and will error out after suspending of the I2C controller, hence we need to ensure that interrupt won't fire on suspend when it's too late. Disable interrupt across suspend/resume. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/lm90.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 658b486d2f5e..b53f17511b05 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -1973,11 +1973,36 @@ static void lm90_alert(struct i2c_client *client, enum i2c_alert_protocol type,
}
}
+static int __maybe_unused lm90_suspend(struct device *dev)
+{
+ struct lm90_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+
+ if (client->irq)
+ disable_irq(client->irq);
+
+ return 0;
+}
+
+static int __maybe_unused lm90_resume(struct device *dev)
+{
+ struct lm90_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+
+ if (client->irq)
+ enable_irq(client->irq);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(lm90_pm_ops, lm90_suspend, lm90_resume);
+
static struct i2c_driver lm90_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "lm90",
.of_match_table = of_match_ptr(lm90_of_match),
+ .pm = &lm90_pm_ops,
},
.probe_new = lm90_probe,
.alert = lm90_alert,