CONFIG_PM is defined when CONFIG_PM_SLEEP or CONFIG_PM_RUNTIME is defined,
however suspend and resume methods are only valid in the context of
CONFIG_PM_SLEEP. If only CONFIG_PM_RUNTIME is defined we get the following
warning (courtesy of Geerts randconfig builds):
ad7879-i2c.c: warning: 'ad7879_i2c_resume' defined but not used
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
#define AD7879_DEVID 0x79 /* AD7879-1/AD7889-1 */
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int ad7879_i2c_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
return 0;
}
+#endif
static SIMPLE_DEV_PM_OPS(ad7879_i2c_pm, ad7879_i2c_suspend, ad7879_i2c_resume);
-#endif
/* All registers are word-sized.
* AD7879 uses a high-byte first convention.
.driver = {
.name = "ad7879",
.owner = THIS_MODULE,
-#ifdef CONFIG_PM
.pm = &ad7879_i2c_pm,
-#endif
},
.probe = ad7879_i2c_probe,
.remove = __devexit_p(ad7879_i2c_remove),