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authorMathias Nyman <mathias.nyman@linux.intel.com>2015-03-06 17:23:19 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-06 09:47:48 -0800
commitb8cb91e058cd0c0f02059c1207293c5b31d350fa (patch)
tree4eac133da2e31268645eb19dcf5ea1d837449b26 /drivers/pps
parent45ba2154d12fc43b70312198ec47085f10be801a (diff)
downloadlinux-b8cb91e058cd0c0f02059c1207293c5b31d350fa.tar.bz2
xhci: Workaround for PME stuck issues in Intel xhci
The xhci in Intel Sunrisepoint and Cherryview platforms need a driver workaround for a Stuck PME that might either block PME events in suspend, or create spurious PME events preventing runtime suspend. Workaround is to clear a internal PME flag, BIT(28) in a vendor specific PMCTRL register at offset 0x80a4, in both suspend resume callbacks Without this, xhci connected usb devices might never be able to wake up the system from suspend, or prevent device from going to suspend (xhci d3) Cc: <stable@vger.kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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