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xHCI: add XHCI_RESET_ON_RESUME quirk for VIA xHCI host 

The suspend operation of VIA xHCI host have some issues and
hibernate operation works fine, so The XHCI_RESET_ON_RESUME
quirk is added for it.

This patch should base on "xHCI: Don't write zeroed pointer
to xHC registers" that is released by Sarah. Otherwise, the
host system error will ocurr in the hibernate operation
process.

This should be backported to stable kernels as old as 2.6.37,
that contain the commit c877b3b2ad
"xhci: Add reset on resume quirk for asrock p67 host".

Signed-off-by: Elric Fu <elricfu1@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Elric Fu 2012-03-29 15:47:50 +08:00 committed by Sarah Sharp
parent d8aec3dbdf
commit 457a4f61f9
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/host/xhci-pci.c
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@ -95,6 +95,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
xhci->quirks |= XHCI_RESET_ON_RESUME;
xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
}
if (pdev->vendor == PCI_VENDOR_ID_VIA)
xhci->quirks |= XHCI_RESET_ON_RESUME;
}
/* called during probe() after chip reset completes */