[0/3] xhci fixes for usb-linus

Message

Mathias Nyman April 21, 2020, 2:08 p.m. UTC

Hi Greg

These xhci fixes for usb-linus sort out halted empty endpoint handling,
protocol stall handling, and overcurrent handling.

Theses issues have caused usb devices to appear as if they stop working
suddenly, failed to enumerate LS/FS devices behind HS hubs (seen on some
audio devices), and host from freezing in case of suspend on over-current.

-Mathias 

Mathias Nyman (3):
  xhci: Fix handling halted endpoint even if endpoint ring appears empty
  xhci: prevent bus suspend if a roothub port detected a over-current
    condition
  xhci: Don't clear hub TT buffer on ep0 protocol stall

 drivers/usb/host/xhci-hub.c  |  9 +++++++
 drivers/usb/host/xhci-ring.c | 46 +++++++++++++++++++++++++++++++-----
 drivers/usb/host/xhci.c      | 14 +++++------
 drivers/usb/host/xhci.h      |  5 ++--
 4 files changed, 59 insertions(+), 15 deletions(-)