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authorhuajun li <huajun.li.lee@gmail.com>2011-05-03 21:11:00 +0800
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2011-05-12 12:54:22 -0700
commita0885924326f79e157847010a9aaf49b058b30dc (patch)
treea6ce2a417d3b9e921cdd0e5bc56ad1637e8500ba /drivers/usb/host/xhci-hub.c
parent3610ea5397b80822e417aaa0e706fd803fb05680 (diff)
downloadlinux-linaro-stable-a0885924326f79e157847010a9aaf49b058b30dc.tar.gz
xhci: move the common code to a function to get max ports and port array
There are several functions using same code to get max ports and port array, this patch moves the common code to a function in order to reuse them easily. Signed-off-by: Huajun Li <huajun.li.lee@gmail.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
-rw-r--r--drivers/usb/host/xhci-hub.c66
1 files changed, 27 insertions, 39 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index a56963736018..0be788cc2fdb 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))