Comment 15 for bug 1316897

Revision history for this message
ATIpro (somebody2112) wrote :

This problem is caused by port switching. In last discussion of this bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1210858 there was a patch to fix this issue. In new kernel it looks like this

--- drivers/usb/host/pci-quirks.c 2013-12-29 01:18:08.156795361 +0400
+++ drivers/usb/host/pci-quirks.c 2013-12-30 00:24:45.778376887 +0400
@@ -909,8 +909,8 @@
  writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET);

 hc_init:
- if (pdev->vendor == PCI_VENDOR_ID_INTEL)
- usb_enable_intel_xhci_ports(pdev);
+ /*if (pdev->vendor == PCI_VENDOR_ID_INTEL)
+ usb_enable_intel_xhci_ports(pdev);*/

  op_reg_base = base + XHCI_HC_LENGTH(readl(base));