wl1271: fix the inetdev notifier callback return values

The wl1271_dev_notify() was returning 0 or -ENODEV, when it should return
NOTIFY_* instead.  Now we use NOTIFY_DONE when we didn't handle the event or
NOTIFY_OK when we have handled it.

For inetdev notifications, it doesn't matter whether we use NOTIFY_DONE or
NOTIFY_OK, because it ignores the return value of the call to
blocking_notifier_call_chain().  But the notify.h header says that
NOTIFY_DONE is "Don't care" and NOTIFY_OK is "Suits me", so that seems to be
the right way to do it.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 90916ed..c8652ee 100644 (file)
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -815,15 +815,15 @@ static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
 
        wdev = dev->ieee80211_ptr;
        if (wdev == NULL)
-               return -ENODEV;
+               return NOTIFY_DONE;
 
        wiphy = wdev->wiphy;
        if (wiphy == NULL)
-               return -ENODEV;
+               return NOTIFY_DONE;
 
        hw = wiphy_priv(wiphy);
        if (hw == NULL)
-               return -ENODEV;
+               return NOTIFY_DONE;
 
        /* Check that the interface is one supported by this driver. */
        wl_temp = hw->priv;
@@ -832,7 +832,7 @@ static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
                        break;
        }
        if (wl == NULL)
-               return -ENODEV;
+               return NOTIFY_DONE;
 
        /* Get the interface IP address for the device. "ifa" will become
           NULL if:
@@ -868,7 +868,7 @@ static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
 out:
        mutex_unlock(&wl->mutex);
 
-       return ret;
+       return NOTIFY_OK;
 }
 
 static struct notifier_block wl1271_dev_notifier = {