W1: w1-gpio - switch to using dev_pm_ops

Let's stop using legacy platform driver hooks for power management and
switch to using the standard dev_pm_ops-based hooks.

Also, instead of guarding PM methods with #ifdef CONFIG_PM annotate them
as __maybe_unused as it provides better compile coverage.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 13 deletions

diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
index 8f7848c62811..a373ae69d9f6 100644
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -198,11 +198,9 @@ static int w1_gpio_remove(struct platform_device *pdev)
         return 0;
 }
 
-#ifdef CONFIG_PM
-
-static int w1_gpio_suspend(struct platform_device *pdev, pm_message_t state)
+static int __maybe_unused w1_gpio_suspend(struct device *dev)
 {
-        struct w1_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
+        struct w1_gpio_platform_data *pdata = dev_get_platdata(dev);
 
         if (pdata->enable_external_pullup)
                 pdata->enable_external_pullup(0);
@@ -210,9 +208,9 @@ static int w1_gpio_suspend(struct platform_device *pdev, pm_message_t state)
         return 0;
 }
 
-static int w1_gpio_resume(struct platform_device *pdev)
+static int __maybe_unused w1_gpio_resume(struct device *dev)
 {
-        struct w1_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
+        struct w1_gpio_platform_data *pdata = dev_get_platdata(dev);
 
         if (pdata->enable_external_pullup)
                 pdata->enable_external_pullup(1);
@@ -220,20 +218,16 @@ static int w1_gpio_resume(struct platform_device *pdev)
         return 0;
 }
 
-#else
-#define w1_gpio_suspend NULL
-#define w1_gpio_resume  NULL
-#endif
+static SIMPLE_DEV_PM_OPS(w1_gpio_pm_ops, w1_gpio_suspend, w1_gpio_resume);
 
 static struct platform_driver w1_gpio_driver = {
         .driver = {
                 .name   = "w1-gpio",
+                .pm     = &w1_gpio_pm_ops,
                 .of_match_table = of_match_ptr(w1_gpio_dt_ids),
         },
         .probe = w1_gpio_probe,
-        .remove = w1_gpio_remove,
-        .suspend = w1_gpio_suspend,
-        .resume = w1_gpio_resume,
+        .remove = w1_gpio_remove,
 };
 
 module_platform_driver(w1_gpio_driver);