Commit 1aa9578c authored by Sarah Sharp's avatar Sarah Sharp
Browse files

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: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: default avatarDon Zickus <dzickus@redhat.com>
Tested-by: default avatarPrarit Bhargava <prarit@redhat.com>
Cc: stable # 2.6.37
parent 2fc5a7da
......@@ -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;
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment