diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 2d154e27c142..8b906c3683c3 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -458,6 +458,12 @@ static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, return; } + if (xhci->quirks & XHCI_BROKEN_PORT_PED) { + xhci_dbg(xhci, + "Broken Port Enabled/Disabled, ignoring port disable request.\n"); + return; + } + /* Write 1 to disable the port */ writel(port_status | PORT_PE, addr); port_status = readl(addr); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 5bf9df25e2ea..b8474a2e6e5d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1648,6 +1648,9 @@ struct xhci_hcd { #define XHCI_SSIC_PORT_UNUSED (1 << 22) #define XHCI_NO_64BIT_SUPPORT (1 << 23) #define XHCI_MISSING_CAS (1 << 24) +/* For controller with a broken Port Disable implementation */ +#define XHCI_BROKEN_PORT_PED (1 << 25) + unsigned int num_active_eps; unsigned int limit_active_eps; /* There are two roothubs to keep track of bus suspend info for */