On 10.8.2020 17.07, Kai-Heng Feng wrote: > Sometimes re-plugging a USB device during system sleep renders the device > useless: > [ 173.418345] xhci_hcd 0000:00:14.0: Get port status 2-4 read: 0x14203e2, return 0x10262 > ... > [ 176.496485] usb 2-4: Waited 2000ms for CONNECT > [ 176.496781] usb usb2-port4: status 0000.0262 after resume, -19 > [ 176.497103] usb 2-4: can't resume, status -19 > [ 176.497438] usb usb2-port4: logical disconnect > > Because PLS equals to XDEV_RESUME, xHCI driver reports U3 to usbcore, > despite of CAS bit is flagged. > > So proritize CAS over XDEV_RESUME to let usbcore handle warm-reset for > the port. > > Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> > --- Thanks, nice catch. Adding to queue -Mathias
