usb: xhci: wait for CNR controller not ready bit in xhci resume

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NVIDIA 3.1 xHCI card would lose power when moving power state into D3Cold.
Thus we need to wait for CNR bit to clear in xhci resume, just as in
xhci init.

[Minor changes to comment and commit message -Mathias]
Cc: <stable@vger.kernel.org>
Signed-off-by: Rick Tseng <rtseng@nvidia.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-6-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Rick Tseng 2019-10-04 14:59:30 +03:00 • committed by Greg Kroah-Hartman

parent 47f50d6107

commit a70bcbc322

1 changed files with 12 additions and 0 deletions

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drivers/usb/host/xhci.c

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