aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/host/xhci-hub.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
-rw-r--r--drivers/usb/host/xhci-hub.c41
1 files changed, 31 insertions, 10 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 673ad120c43..2732ef660c5 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -475,6 +475,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
struct xhci_bus_state *bus_state;
u16 link_state = 0;
u16 wake_mask = 0;
+ u16 timeout = 0;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -558,6 +559,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
xhci_dbg(xhci, "Resume USB2 port %d\n",
wIndex + 1);
bus_state->resume_done[wIndex] = 0;
+ clear_bit(wIndex, &bus_state->resuming_ports);
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_U0);
xhci_dbg(xhci, "set port %d resume\n",
@@ -622,6 +624,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
link_state = (wIndex & 0xff00) >> 3;
if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK)
wake_mask = wIndex & 0xff00;
+ /* The MSB of wIndex is the U1/U2 timeout */
+ timeout = (wIndex & 0xff00) >> 8;
wIndex &= 0xff;
if (!wIndex || wIndex > max_ports)
goto error;
@@ -746,6 +750,22 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = xhci_readl(xhci, port_array[wIndex]);
break;
+ case USB_PORT_FEAT_U1_TIMEOUT:
+ if (hcd->speed != HCD_USB3)
+ goto error;
+ temp = xhci_readl(xhci, port_array[wIndex] + 1);
+ temp &= ~PORT_U1_TIMEOUT_MASK;
+ temp |= PORT_U1_TIMEOUT(timeout);
+ xhci_writel(xhci, temp, port_array[wIndex] + 1);
+ break;
+ case USB_PORT_FEAT_U2_TIMEOUT:
+ if (hcd->speed != HCD_USB3)
+ goto error;
+ temp = xhci_readl(xhci, port_array[wIndex] + 1);
+ temp &= ~PORT_U2_TIMEOUT_MASK;
+ temp |= PORT_U2_TIMEOUT(timeout);
+ xhci_writel(xhci, temp, port_array[wIndex] + 1);
+ break;
default:
goto error;
}
@@ -845,7 +865,12 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
/* Initial status is no changes */
retval = (max_ports + 8) / 8;
memset(buf, 0, retval);
- status = 0;
+
+ /*
+ * Inform the usbcore about resume-in-progress by returning
+ * a non-zero value even if there are no status changes.
+ */
+ status = bus_state->resuming_ports;
mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC;
@@ -885,15 +910,11 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
spin_lock_irqsave(&xhci->lock, flags);
if (hcd->self.root_hub->do_remote_wakeup) {
- port_index = max_ports;
- while (port_index--) {
- if (bus_state->resume_done[port_index] != 0) {
- spin_unlock_irqrestore(&xhci->lock, flags);
- xhci_dbg(xhci, "suspend failed because "
- "port %d is resuming\n",
- port_index + 1);
- return -EBUSY;
- }
+ if (bus_state->resuming_ports) {
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ xhci_dbg(xhci, "suspend failed because "
+ "a port is resuming\n");
+ return -EBUSY;
}
}