diff options
| -rw-r--r-- | drivers/usb/host/xhci-hub.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 60aeff3e154b..5af4f90489a0 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -714,13 +714,6 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, struct xhci_port *port, } } -/* Updates Link Status for USB 2.1 port */ -static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) -{ - if ((status_reg & PORT_PLS_MASK) == XDEV_U2) - *status |= USB_PORT_STAT_L1; -} - /* Updates Link Status for super Speed port */ static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci, u32 *status, u32 status_reg) @@ -853,6 +846,25 @@ static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, xhci_del_comp_mod_timer(xhci, portsc, portnum); } +static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, + u32 portsc) +{ + u32 link_state; + + link_state = portsc & PORT_PLS_MASK; + + /* USB2 wPortStatus bits */ + if (portsc & PORT_POWER) { + *status |= USB_PORT_STAT_POWER; + + /* link state is only valid if port is powered */ + if (link_state == XDEV_U3) + *status |= USB_PORT_STAT_SUSPEND; + if (link_state == XDEV_U2) + *status |= USB_PORT_STAT_L1; + } +} + /* * Converts a raw xHCI port status into the format that external USB 2.0 or USB * 3.0 hubs use. @@ -888,14 +900,13 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, status |= USB_PORT_STAT_C_OVERCURRENT << 16; if ((raw_port_status & PORT_RC)) status |= USB_PORT_STAT_C_RESET << 16; - /* USB3.0 only */ + + /* USB2 and USB3 specific bits including Port Link State */ if (hcd->speed >= HCD_USB3) xhci_get_usb3_port_status(port, &status, raw_port_status); - if (hcd->speed < HCD_USB3) { - if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 - && (raw_port_status & PORT_POWER)) - status |= USB_PORT_STAT_SUSPEND; - } + else + xhci_get_usb2_port_status(port, &status, raw_port_status); + if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && !DEV_SUPERSPEED_ANY(raw_port_status) && hcd->speed < HCD_USB3) { if ((raw_port_status & PORT_RESET) || @@ -1009,13 +1020,6 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, status |= USB_PORT_STAT_OVERCURRENT; if (raw_port_status & PORT_RESET) status |= USB_PORT_STAT_RESET; - if (raw_port_status & PORT_POWER) { - if (hcd->speed < HCD_USB3) - status |= USB_PORT_STAT_POWER; - } - /* Update Port Link State */ - if (hcd->speed < HCD_USB3) - xhci_hub_report_usb2_link_state(&status, raw_port_status); if (bus_state->port_c_suspend & (1 << wIndex)) status |= USB_PORT_STAT_C_SUSPEND << 16; |