[PATCH/RFC,1/3] USB: OHCI: Export the ohci_hub_control function

Commit Message

Laurent Pinchart April 14, 2014, 12:25 p.m. UTC

Platform drivers sometimes need to perform specific handling of hub
control requests. Make this possible by exporting the ohci_hub_control()
function which can then be called from a custom hub control handler in
the default case.

Signed-off-by: Laurent Pinchart <[e-mail]>
---
 drivers/usb/host/ohci-hub.c     | 4 ++--
 drivers/usb/host/ohci-s3c2410.c | 7 ++-----
 drivers/usb/host/ohci.h         | 2 ++
 3 files changed, 6 insertions(+), 7 deletions(-)

Patch

diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index c81c872..70013c6 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -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 ff7c8f1..95809c5 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -45,8 +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);
@@ -181,7 +179,7 @@  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 +229,7 @@  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;
 
@@ -489,7 +487,6 @@  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;
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 9250cad..f317de6 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -727,3 +727,5 @@  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);