On Tue, 2021-05-11 at 13:27 +0200, Greg Kroah-Hartman wrote: > On Tue, May 11, 2021 at 06:15:22PM +0800, Chunfeng Yun wrote: > > This may happen if the port becomes resume status exactly > > when usb_port_resume() gets port status, it still need provide > > a TRSMCRY time before access the device. > > > > Reported-by: Tianping Fang <tianping.fang@xxxxxxxxxxxx> > > Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> > > --- > > drivers/usb/core/hub.c | 6 +++--- > > 1 file changed, 3 insertions(+), 3 deletions(-) > > Does this need to go to any older/stable kernels? If so, how far back? The flow is changed by "b01b03f3ad82 USB: add new routine for checking port-resume type", but it will cause conflict with "ad493e5e5805 usb: add usb port auto power off mechanism" > > thanks, > > greg k-h