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path: root/drivers/video/backlight/adp5520_bl.c
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Diffstat (limited to 'drivers/video/backlight/adp5520_bl.c')
-rw-r--r--drivers/video/backlight/adp5520_bl.c28
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index a1e41d4faa71..c84701b7ca6e 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c
@@ -143,13 +143,16 @@ static int adp5520_bl_setup(struct backlight_device *bl)
static ssize_t adp5520_show(struct device *dev, char *buf, int reg)
{
struct adp5520_bl *data = dev_get_drvdata(dev);
- int error;
+ int ret;
uint8_t reg_val;
mutex_lock(&data->lock);
- error = adp5520_read(data->master, reg, &reg_val);
+ ret = adp5520_read(data->master, reg, &reg_val);
mutex_unlock(&data->lock);
+ if (ret < 0)
+ return ret;
+
return sprintf(buf, "%u\n", reg_val);
}
@@ -349,35 +352,34 @@ static int adp5520_bl_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM
-static int adp5520_bl_suspend(struct platform_device *pdev,
- pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int adp5520_bl_suspend(struct device *dev)
{
- struct backlight_device *bl = platform_get_drvdata(pdev);
+ struct backlight_device *bl = dev_get_drvdata(dev);
+
return adp5520_bl_set(bl, 0);
}
-static int adp5520_bl_resume(struct platform_device *pdev)
+static int adp5520_bl_resume(struct device *dev)
{
- struct backlight_device *bl = platform_get_drvdata(pdev);
+ struct backlight_device *bl = dev_get_drvdata(dev);
backlight_update_status(bl);
return 0;
}
-#else
-#define adp5520_bl_suspend NULL
-#define adp5520_bl_resume NULL
#endif
+static SIMPLE_DEV_PM_OPS(adp5520_bl_pm_ops, adp5520_bl_suspend,
+ adp5520_bl_resume);
+
static struct platform_driver adp5520_bl_driver = {
.driver = {
.name = "adp5520-backlight",
.owner = THIS_MODULE,
+ .pm = &adp5520_bl_pm_ops,
},
.probe = adp5520_bl_probe,
.remove = adp5520_bl_remove,
- .suspend = adp5520_bl_suspend,
- .resume = adp5520_bl_resume,
};
module_platform_driver(adp5520_bl_driver);