1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
index a411702413d6..6f8866d6a905 100644
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -74,6 +74,9 @@ static int __init w1_gpio_probe(struct platform_device *pdev)
         if (err)
                 goto free_gpio;
 
+        if (pdata->enable_external_pullup)
+                pdata->enable_external_pullup(1);
+
         platform_set_drvdata(pdev, master);
 
         return 0;
@@ -91,6 +94,9 @@ static int __exit w1_gpio_remove(struct platform_device *pdev)
         struct w1_bus_master *master = platform_get_drvdata(pdev);
         struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
 
+        if (pdata->enable_external_pullup)
+                pdata->enable_external_pullup(0);
+
         w1_remove_master_device(master);
         gpio_free(pdata->pin);
         kfree(master);
@@ -98,12 +104,41 @@ static int __exit 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)
+{
+        struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
+
+        if (pdata->enable_external_pullup)
+                pdata->enable_external_pullup(0);
+
+        return 0;
+}
+
+static int w1_gpio_resume(struct platform_device *pdev)
+{
+        struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
+
+        if (pdata->enable_external_pullup)
+                pdata->enable_external_pullup(1);
+
+        return 0;
+}
+
+#else
+#define w1_gpio_suspend NULL
+#define w1_gpio_resume  NULL
+#endif
+
 static struct platform_driver w1_gpio_driver = {
         .driver = {
                 .name   = "w1-gpio",
                 .owner  = THIS_MODULE,
         },
         .remove = __exit_p(w1_gpio_remove),
+        .suspend = w1_gpio_suspend,
+        .resume = w1_gpio_resume,
 };
 
 static int __init w1_gpio_init(void)