These drivers need to be able to reference "struct ieee80211_hw" from
the driver's private data, and vice versa. The USB driver failed to
store the address of ieee80211_hw in the private data. Although this
bug has been present for a long time, it was not exposed until
commit 
ba9f93f82aba ("rtlwifi: Fix enter/exit power_save").
Fixes: ba9f93f82aba ("rtlwifi: Fix enter/exit power_save")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
                return -ENOMEM;
        }
        rtlpriv = hw->priv;
+       rtlpriv->hw = hw;
        rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
                                    GFP_KERNEL);
        if (!rtlpriv->usb_data)