hwmon: (tmp102) add hibernation callbacks

Setting a dev_pm_ops suspend/resume pair but not a set of
hibernation functions means those pm functions will not be
called upon hibernation.
Fix this by using SIMPLE_DEV_PM_OPS, which appropriately
assigns the suspend and hibernation handlers and move
mp102_suspend/tmp102_resume under CONFIG_PM_SLEEP to avoid
build warnings.

Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
[groeck: Declare tmp102_dev_pm_ops as static variable]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c
index ba9f478f64ee..9da2735f1424 100644
--- a/drivers/hwmon/tmp102.c
+++ b/drivers/hwmon/tmp102.c
@@ -253,7 +253,7 @@ static int tmp102_remove(struct i2c_client *client)
         return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int tmp102_suspend(struct device *dev)
 {
         struct i2c_client *client = to_i2c_client(dev);
@@ -279,17 +279,10 @@ static int tmp102_resume(struct device *dev)
         config &= ~TMP102_CONF_SD;
         return i2c_smbus_write_word_swapped(client, TMP102_CONF_REG, config);
 }
-
-static const struct dev_pm_ops tmp102_dev_pm_ops = {
-        .suspend        = tmp102_suspend,
-        .resume         = tmp102_resume,
-};
-
-#define TMP102_DEV_PM_OPS (&tmp102_dev_pm_ops)
-#else
-#define TMP102_DEV_PM_OPS NULL
 #endif /* CONFIG_PM */
 
+static SIMPLE_DEV_PM_OPS(tmp102_dev_pm_ops, tmp102_suspend, tmp102_resume);
+
 static const struct i2c_device_id tmp102_id[] = {
         { "tmp102", 0 },
         { }
@@ -298,7 +291,7 @@ MODULE_DEVICE_TABLE(i2c, tmp102_id);
 
 static struct i2c_driver tmp102_driver = {
         .driver.name    = DRIVER_NAME,
-        .driver.pm      = TMP102_DEV_PM_OPS,
+        .driver.pm      = &tmp102_dev_pm_ops,
         .probe          = tmp102_probe,
         .remove         = tmp102_remove,
         .id_table       = tmp102_id,