diff options
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
| -rw-r--r-- | drivers/usb/host/xhci-hub.c | 66 |
1 files changed, 27 insertions, 39 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index a5696373601..0be788cc2fd 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -376,11 +376,27 @@ static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue, port_change_bit, wIndex, port_status); } +static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) +{ + int max_ports; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + if (hcd->speed == HCD_USB3) { + max_ports = xhci->num_usb3_ports; + *port_array = xhci->usb3_ports; + } else { + max_ports = xhci->num_usb2_ports; + *port_array = xhci->usb2_ports; + } + + return max_ports; +} + int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); - int ports; + int max_ports; unsigned long flags; u32 temp, temp1, status; int retval = 0; @@ -389,13 +405,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, struct xhci_bus_state *bus_state; u16 link_state = 0; - if (hcd->speed == HCD_USB3) { - ports = xhci->num_usb3_ports; - port_array = xhci->usb3_ports; - } else { - ports = xhci->num_usb2_ports; - port_array = xhci->usb2_ports; - } + max_ports = xhci_get_ports(hcd, &port_array); bus_state = &xhci->bus_state[hcd_index(hcd)]; spin_lock_irqsave(&xhci->lock, flags); @@ -420,7 +430,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, (struct usb_hub_descriptor *) buf); break; case GetPortStatus: - if (!wIndex || wIndex > ports) + if (!wIndex || wIndex > max_ports) goto error; wIndex--; status = 0; @@ -519,7 +529,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, if (wValue == USB_PORT_FEAT_LINK_STATE) link_state = (wIndex & 0xff00) >> 3; wIndex &= 0xff; - if (!wIndex || wIndex > ports) + if (!wIndex || wIndex > max_ports) goto error; wIndex--; temp = xhci_readl(xhci, port_array[wIndex]); @@ -637,7 +647,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, temp = xhci_readl(xhci, port_array[wIndex]); break; case ClearPortFeature: - if (!wIndex || wIndex > ports) + if (!wIndex || wIndex > max_ports) goto error; wIndex--; temp = xhci_readl(xhci, port_array[wIndex]); @@ -730,21 +740,15 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) u32 mask; int i, retval; struct xhci_hcd *xhci = hcd_to_xhci(hcd); - int ports; + int max_ports; __le32 __iomem **port_array; struct xhci_bus_state *bus_state; - if (hcd->speed == HCD_USB3) { - ports = xhci->num_usb3_ports; - port_array = xhci->usb3_ports; - } else { - ports = xhci->num_usb2_ports; - port_array = xhci->usb2_ports; - } + max_ports = xhci_get_ports(hcd, &port_array); bus_state = &xhci->bus_state[hcd_index(hcd)]; /* Initial status is no changes */ - retval = (ports + 8) / 8; + retval = (max_ports + 8) / 8; memset(buf, 0, retval); status = 0; @@ -752,7 +756,7 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) spin_lock_irqsave(&xhci->lock, flags); /* For each port, did anything change? If so, set that bit in buf. */ - for (i = 0; i < ports; i++) { + for (i = 0; i < max_ports; i++) { temp = xhci_readl(xhci, port_array[i]); if (temp == 0xffffffff) { retval = -ENODEV; @@ -780,15 +784,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd) struct xhci_bus_state *bus_state; unsigned long flags; - if (hcd->speed == HCD_USB3) { - max_ports = xhci->num_usb3_ports; - port_array = xhci->usb3_ports; - xhci_dbg(xhci, "suspend USB 3.0 root hub\n"); - } else { - max_ports = xhci->num_usb2_ports; - port_array = xhci->usb2_ports; - xhci_dbg(xhci, "suspend USB 2.0 root hub\n"); - } + max_ports = xhci_get_ports(hcd, &port_array); bus_state = &xhci->bus_state[hcd_index(hcd)]; spin_lock_irqsave(&xhci->lock, flags); @@ -873,15 +869,7 @@ int xhci_bus_resume(struct usb_hcd *hcd) u32 temp; unsigned long flags; - if (hcd->speed == HCD_USB3) { - max_ports = xhci->num_usb3_ports; - port_array = xhci->usb3_ports; - xhci_dbg(xhci, "resume USB 3.0 root hub\n"); - } else { - max_ports = xhci->num_usb2_ports; - port_array = xhci->usb2_ports; - xhci_dbg(xhci, "resume USB 2.0 root hub\n"); - } + max_ports = xhci_get_ports(hcd, &port_array); bus_state = &xhci->bus_state[hcd_index(hcd)]; if (time_before(jiffies, bus_state->next_statechange)) |