usb: xhci-mtk: fix random remote wakeup
Some platforms, e.g. 8183/8192, use low level latch way to keep wakeup signal, it may latch a wrong signal if debounce more time, and enable wakeup function earlier. ____________________ ip_sleep ____/ \_____________ ___________________ wakeup_signal ____________/ \______ _______________________________ wakeup_en _______/ ^ ^ |(1) |(2) latch wakeup_signal mistakenly at (1), should latch it at (2); Workaround: delay about 100us to enable wakeup, meanwhile decrease debounce time. Signed-off-by:Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20211102025004.29156-2-chunfeng.yun@mediatek.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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