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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2022-04-08 15:48:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-09 17:17:56 +0200 |
| commit | 33597f0c48be0836854d43c577e35c8f8a765a7d (patch) | |
| tree | d774e7861a0512b6d54c5806f40a1b356b16b88a /drivers/usb/cdns3 | |
| parent | xhci: stop polling roothubs after shutdown (diff) | |
| download | linux-33597f0c48be0836854d43c577e35c8f8a765a7d.tar.xz linux-33597f0c48be0836854d43c577e35c8f8a765a7d.zip | |
xhci: increase usb U3 -> U0 link resume timeout from 100ms to 500ms
The first U3 wake signal by the host may be lost if the USB 3 connection is
tunneled over USB4, with a runtime suspended USB4 host, and firmware
implemented connection manager.
Specs state the host must wait 100ms (tU3WakeupRetryDelay) before
resending a U3 wake signal if device doesn't respond, leading to U3 -> U0
link transition times around 270ms in the tunneled case.
Fixes: 0200b9f790b0 ("xhci: Wait until link state trainsits to U0 after setting USB_SS_PORT_LS_U0")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220408134823.2527272-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/cdns3')
0 files changed, 0 insertions, 0 deletions