USB: OHCI: Export the OHCI hub control and status_data functions

Platform drivers sometimes need to perform specific handling of hub
control requests and status data. Make this possible by exporting the
ohci_hub_control() and ohci_hub_status_data() functions which can then
be called from custom hub operations in the default case.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

4 files changed, 12 insertions, 23 deletions

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 091ae4905cfc..e49eb4f90f5d 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -46,9 +46,6 @@ static const char hcd_name[] = "ohci-atmel";
 
 static struct hc_driver __read_mostly ohci_at91_hc_driver;
 static int clocked;
-static int (*orig_ohci_hub_control)(struct usb_hcd  *hcd, u16 typeReq,
-                        u16 wValue, u16 wIndex, char *buf, u16 wLength);
-static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf);
 
 extern int usb_disabled(void);
 
@@ -262,7 +259,7 @@ static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
 static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf)
 {
         struct at91_usbh_data *pdata = hcd->self.controller->platform_data;
-        int length = orig_ohci_hub_status_data(hcd, buf);
+        int length = ohci_hub_status_data(hcd, buf);
         int port;
 
         at91_for_each_port(port) {
@@ -340,8 +337,7 @@ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                 break;
         }
 
-        ret = orig_ohci_hub_control(hcd, typeReq, wValue, wIndex + 1,
-                                buf, wLength);
+        ret = ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, buf, wLength);
         if (ret)
                 goto out;
 
@@ -690,9 +686,6 @@ static int __init ohci_at91_init(void)
          * too easy.
          */
 
-        orig_ohci_hub_control = ohci_at91_hc_driver.hub_control;
-        orig_ohci_hub_status_data = ohci_at91_hc_driver.hub_status_data;
-
         ohci_at91_hc_driver.hub_status_data     = ohci_at91_hub_status_data;
         ohci_at91_hc_driver.hub_control         = ohci_at91_hub_control;
 
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index c81c8721cc5a..3d53208278b3 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -438,8 +438,7 @@ static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
 
 /* build "status change" packet (one or two bytes) from HC registers */
 
-static int
-ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
+int ohci_hub_status_data(struct usb_hcd *hcd, char *buf)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
         int             i, changed = 0, length = 1;
@@ -504,6 +503,7 @@ done:
 
         return changed ? length : 0;
 }
+EXPORT_SYMBOL_GPL(ohci_hub_status_data);
 
 /*-------------------------------------------------------------------------*/
 
@@ -646,7 +646,7 @@ static inline int root_port_reset (struct ohci_hcd *ohci, unsigned port)
         return 0;
 }
 
-static int ohci_hub_control (
+int ohci_hub_control(
         struct usb_hcd  *hcd,
         u16             typeReq,
         u16             wValue,
@@ -772,4 +772,4 @@ error:
         }
         return retval;
 }
-
+EXPORT_SYMBOL_GPL(ohci_hub_control);
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index ff7c8f1c48fb..3d753a9d3141 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -45,10 +45,6 @@ static struct clk *usb_clk;
 
 /* forward definitions */
 
-static int (*orig_ohci_hub_control)(struct usb_hcd  *hcd, u16 typeReq,
-                        u16 wValue, u16 wIndex, char *buf, u16 wLength);
-static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf);
-
 static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc);
 
 /* conversion functions */
@@ -110,7 +106,7 @@ ohci_s3c2410_hub_status_data(struct usb_hcd *hcd, char *buf)
         int orig;
         int portno;
 
-        orig = orig_ohci_hub_status_data(hcd, buf);
+        orig = ohci_hub_status_data(hcd, buf);
 
         if (info == NULL)
                 return orig;
@@ -181,7 +177,7 @@ static int ohci_s3c2410_hub_control(
          * process the request straight away and exit */
 
         if (info == NULL) {
-                ret = orig_ohci_hub_control(hcd, typeReq, wValue,
+                ret = ohci_hub_control(hcd, typeReq, wValue,
                                        wIndex, buf, wLength);
                 goto out;
         }
@@ -231,7 +227,7 @@ static int ohci_s3c2410_hub_control(
                 break;
         }
 
-        ret = orig_ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+        ret = ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
         if (ret)
                 goto out;
 
@@ -489,9 +485,6 @@ static int __init ohci_s3c2410_init(void)
          * override these functions by making it too easy.
          */
 
-        orig_ohci_hub_control = ohci_s3c2410_hc_driver.hub_control;
-        orig_ohci_hub_status_data = ohci_s3c2410_hc_driver.hub_status_data;
-
         ohci_s3c2410_hc_driver.hub_status_data  = ohci_s3c2410_hub_status_data;
         ohci_s3c2410_hc_driver.hub_control      = ohci_s3c2410_hub_control;
 
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 9250cada13f0..a11658373209 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -727,3 +727,6 @@ extern int	ohci_setup(struct usb_hcd *hcd);
 extern int      ohci_suspend(struct usb_hcd *hcd, bool do_wakeup);
 extern int      ohci_resume(struct usb_hcd *hcd, bool hibernated);
 #endif
+extern int      ohci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+                                 u16 wIndex, char *buf, u16 wLength);
+extern int      ohci_hub_status_data(struct usb_hcd *hcd, char *buf);