From 621faf4f6a181b6e012c1d1865213f36f4159b7f Mon Sep 17 00:00:00 2001
From: Kai-Heng Feng <kai.heng.feng@canonical.com>
Date: Fri, 20 Apr 2018 16:52:50 +0300
Subject: [PATCH] xhci: Fix USB ports for Dell Inspiron 5775
Git-commit: 621faf4f6a181b6e012c1d1865213f36f4159b7f
Patch-mainline: v4.17-rc3
References: bsc#1090888
The Dell Inspiron 5775 is a Raven Ridge. The Enable Slot command timed
out when a USB device gets plugged:
[ 212.156326] xhci_hcd 0000:03:00.3: Error while assigning device slot ID
[ 212.156340] xhci_hcd 0000:03:00.3: Max number of devices this xHCI host supports is 64.
[ 212.156348] usb usb2-port3: couldn't allocate usb_device
AMD suggests that a delay before xHC suspends can fix the issue.
I can confirm it fixes the issue, so use the suspend delay quirk for
Raven Ridge's xHC.
Cc: stable@vger.kernel.org
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/usb/host/xhci-pci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index f17b7eab66cf..85ffda85f8ab 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -126,7 +126,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
xhci->quirks |= XHCI_AMD_PLL_FIX;
- if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x43bb)
+ if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+ (pdev->device == 0x15e0 ||
+ pdev->device == 0x15e1 ||
+ pdev->device == 0x43bb))
xhci->quirks |= XHCI_SUSPEND_DELAY;
if (pdev->vendor == PCI_VENDOR_ID_AMD)
--
2.16.4