PM: wakeup: Unify device_init_wakeup() for PM_SLEEP and !PM_SLEEP

Previously the CONFIG_PM_SLEEP and !CONFIG_PM_SLEEP device_init_wakeup()
implementations differed in confusing ways:

  - The PM_SLEEP version checked for a NULL device pointer and returned
    -EINVAL, while the !PM_SLEEP version did not and would simply
    dereference a NULL pointer.

  - When called with "false", the !PM_SLEEP version cleared "capable" and
    "enable" in the opposite order of the PM_SLEEP version.  That was
    harmless because for !PM_SLEEP they're simple assignments, but it's
    unnecessary confusion.

Use a simplified version of the PM_SLEEP implementation for both cases.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 0 insertions, 30 deletions

diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 11a4ffe91367..e3befa2c1b66 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -501,36 +501,6 @@ void device_set_wakeup_capable(struct device *dev, bool capable)
 EXPORT_SYMBOL_GPL(device_set_wakeup_capable);
 
 /**
- * device_init_wakeup - Device wakeup initialization.
- * @dev: Device to handle.
- * @enable: Whether or not to enable @dev as a wakeup device.
- *
- * By default, most devices should leave wakeup disabled.  The exceptions are
- * devices that everyone expects to be wakeup sources: keyboards, power buttons,
- * possibly network interfaces, etc.  Also, devices that don't generate their
- * own wakeup requests but merely forward requests from one bus to another
- * (like PCI bridges) should have wakeup enabled by default.
- */
-int device_init_wakeup(struct device *dev, bool enable)
-{
-	int ret = 0;
-
-	if (!dev)
-		return -EINVAL;
-
-	if (enable) {
-		device_set_wakeup_capable(dev, true);
-		ret = device_wakeup_enable(dev);
-	} else {
-		device_wakeup_disable(dev);
-		device_set_wakeup_capable(dev, false);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(device_init_wakeup);
-
-/**
  * device_set_wakeup_enable - Enable or disable a device to wake up the system.
  * @dev: Device to handle.
  * @enable: enable/disable flag