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

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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>
This commit is contained in:
Laurent Pinchart 2014-04-16 18:00:09 +02:00 committed by Greg Kroah-Hartman
parent 0021a75a47
commit 42b59eba71
4 changed files with 12 additions and 23 deletions
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11
drivers/usb/host/ohci-at91.c
View File

@ -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;

8
drivers/usb/host/ohci-hub.c
View File

@ -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);

13
drivers/usb/host/ohci-s3c2410.c
View File

@ -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;

3
drivers/usb/host/ohci.h
View File

@ -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);