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>
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 8b1c27f..496764b 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -109,6 +109,11 @@
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;
}