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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2014-01-17 15:38:12 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-03-31 09:58:14 -0700
commitd04ff9c036a8481b8a1534b8b4b65757f3bfa53e (patch)
treec3a34d42bcfa2815138c356e1a15da13e9588315 /drivers
parentc16d2409ed27ae4fabcf608e48725e1618e76064 (diff)
xhci: Fix resume issues on Renesas chips in Samsung laptops
commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-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 159e3c6d92b..3581416a24d 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -113,6 +113,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
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;
}