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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2014-01-17 15:38:12 -0800
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2014-01-22 13:33:48 -0800
commit1aa9578c1a9450fb21501c4f549f5b1edb557e6d (patch)
tree5f2a5b8eefd074b407e65ee1740e53489dfafb01 /drivers/usb/host/xhci-pci.c
parent2fc5a7dace3c43e62402ab4e8800a8f1834ffe2a (diff)
downloadlinux-stericsson-1aa9578c1a9450fb21501c4f549f5b1edb557e6d.tar.gz
xhci: Fix resume issues on Renesas chips in Samsung laptops
Don Zickus <dzickus@redhat.com> writes: Some co-workers of mine bought Samsung laptops that had mostly usb3 ports. Those ports did not resume correctly (the driver would timeout communicating and fail). This led to frustration as suspend/resume is a common use for laptops. Poking around, I applied the reset on resume quirk to this chipset and the resume started working. Reloading the xhci_hcd module had been the temporary workaround. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Reported-by: Don Zickus <dzickus@redhat.com> Tested-by: Prarit Bhargava <prarit@redhat.com> Cc: stable # 2.6.37
Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
-rw-r--r--drivers/usb/host/xhci-pci.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 3c898c12a06b..04f986d9234f 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -142,6 +142,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
"QUIRK: Resetting on resume");
xhci->quirks |= XHCI_TRUST_TX_LENGTH;
}
+ if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
+ pdev->device == 0x0015 &&
+ pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
+ pdev->subsystem_device == 0xc0cd)
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
if (pdev->vendor == PCI_VENDOR_ID_VIA)
xhci->quirks |= XHCI_RESET_ON_RESUME;
}