* [RFC PATCH 1/2] USB: OHCI: prepare to make ohci-hcd a library module
2013-05-07 9:48 [RFC PATCH 0/2] USB: OHCI: Start splitting up the driver Manjunath Goudar
@ 2013-05-07 9:48 ` Manjunath Goudar
2013-05-07 9:48 ` [RFC PATCH 2/2] USB: OHCI: make ohci-pci a separate driver Manjunath Goudar
1 sibling, 0 replies; 4+ messages in thread
From: Manjunath Goudar @ 2013-05-07 9:48 UTC (permalink / raw)
To: linux-arm-kernel
This patch prepares ohci-hcd for being split up into a core
library and separate platform driver modules. A generic
ohci_hc_driver structure is created, containing all the "standard"
values, and a new mechanism is added whereby a driver module can
specify a set of overrides to those values. In addition the
ohci_restart(),ohci_suspend() and ohci_resume() routines need
to be EXPORTed for use by the drivers.
In V2:
-ohci_hcd_init(), ohci_run() and ohci_stop revert back to static routine.
-ohci_setup() and ohci_start() functions written to generic OHCI initialization
for all ohci bus glue.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb at vger.kernel.org
---
drivers/usb/host/Makefile | 2 +
drivers/usb/host/ohci-hcd.c | 123 +++++++++++++++++++++++++++++++++-----
drivers/usb/host/ohci-pci.c | 2 +-
drivers/usb/host/ohci-platform.c | 2 +-
drivers/usb/host/ohci.h | 30 +++++++++-
5 files changed, 138 insertions(+), 21 deletions(-)
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 58c14c1..a38d76b 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -40,7 +40,9 @@ obj-$(CONFIG_USB_EHCI_TEGRA) +=ehci-tegra.o
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
+
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
+
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 9e6de95..7922c61 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -79,13 +79,7 @@ static const char hcd_name [] = "ohci_hcd";
#include "pci-quirks.h"
static void ohci_dump (struct ohci_hcd *ohci, int verbose);
-static int ohci_init (struct ohci_hcd *ohci);
-static void ohci_stop (struct usb_hcd *hcd);
-
-#if defined(CONFIG_PM) || defined(CONFIG_PCI)
-static int ohci_restart (struct ohci_hcd *ohci);
-#endif
-
+static void ohci_stop(struct usb_hcd *hcd);
#ifdef CONFIG_PCI
static void sb800_prefetch(struct ohci_hcd *ohci, int on);
#else
@@ -520,7 +514,7 @@ done:
/* init memory, and kick BIOS/SMM off */
-static int ohci_init (struct ohci_hcd *ohci)
+int ohci_init(struct ohci_hcd *ohci)
{
int ret;
struct usb_hcd *hcd = ohci_to_hcd(ohci);
@@ -590,6 +584,7 @@ static int ohci_init (struct ohci_hcd *ohci)
return ret;
}
+EXPORT_SYMBOL_GPL(ohci_init);
/*-------------------------------------------------------------------------*/
@@ -597,11 +592,11 @@ static int ohci_init (struct ohci_hcd *ohci)
* resets USB and controller
* enable interrupts
*/
-static int ohci_run (struct ohci_hcd *ohci)
+static int ohci_run(struct usb_hcd *hcd)
{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
u32 mask, val;
int first = ohci->fminterval == 0;
- struct usb_hcd *hcd = ohci_to_hcd(ohci);
ohci->rh_state = OHCI_RH_HALTED;
@@ -767,7 +762,37 @@ retry:
return 0;
}
+/*------------------------------------------------------------------------*/
+
+/* ohci generic function for all OHCI bus glue */
+
+static int ohci_setup(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int retval;
+
+ ohci->sbrn = HCD_USB11;
+
+ /* data structure init */
+ retval = ohci_init(ohci);
+ if (retval)
+ return retval;
+ ohci_usb_reset(ohci);
+ return 0;
+}
+static int ohci_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+ ret = ohci_run(hcd);
+ if (ret < 0) {
+ ohci_err(ohci, "can't start\n");
+ ohci_stop(hcd);
+ }
+ return ret;
+}
+/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*/
/* an interrupt happens */
@@ -949,11 +974,12 @@ static void ohci_stop (struct usb_hcd *hcd)
#if defined(CONFIG_PM) || defined(CONFIG_PCI)
/* must not be called from interrupt context */
-static int ohci_restart (struct ohci_hcd *ohci)
+int ohci_restart(struct ohci_hcd *ohci)
{
int temp;
int i;
struct urb_priv *priv;
+ struct usb_hcd *hcd;
spin_lock_irq(&ohci->lock);
ohci->rh_state = OHCI_RH_HALTED;
@@ -1001,19 +1027,22 @@ static int ohci_restart (struct ohci_hcd *ohci)
ohci->ed_controltail = NULL;
ohci->ed_bulktail = NULL;
- if ((temp = ohci_run (ohci)) < 0) {
- ohci_err (ohci, "can't restart, %d\n", temp);
+ hcd = ohci_to_hcd(ohci);
+ temp = ohci_run(hcd);
+ if (temp < 0) {
+ ohci_err(ohci, "can't restart, %d\n", temp);
return temp;
}
ohci_dbg(ohci, "restart complete\n");
return 0;
}
+EXPORT_SYMBOL_GPL(ohci_restart);
#endif
#ifdef CONFIG_PM
-static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
@@ -1031,9 +1060,9 @@ static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
return 0;
}
+EXPORT_SYMBOL_GPL(ohci_suspend);
-
-static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
+int ohci_resume(struct usb_hcd *hcd, bool hibernated)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int port;
@@ -1081,11 +1110,73 @@ static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
return 0;
}
+EXPORT_SYMBOL_GPL(ohci_resume);
#endif
/*-------------------------------------------------------------------------*/
+/*
+ * Generic structure: This gets copied for platform drivers so that
+ * individual entries can be overridden as needed.
+ */
+
+static const struct hc_driver ohci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY | HCD_USB11,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ohci_setup,
+ .start = ohci_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+ .start_port_reset = ohci_start_port_reset,
+};
+
+void ohci_init_driver(struct hc_driver *drv,
+ const struct ohci_driver_overrides *over)
+{
+ /* Copy the generic table to drv and then apply the overrides */
+ *drv = ohci_hc_driver;
+
+ drv->product_desc = over->product_desc;
+ drv->hcd_priv_size += over->extra_priv_size;
+ if (over->reset)
+ drv->reset = over->reset;
+}
+EXPORT_SYMBOL_GPL(ohci_init_driver);
+
+/*-------------------------------------------------------------------------*/
+
MODULE_AUTHOR (DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE ("GPL");
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 951514e..0b34b59 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -288,7 +288,7 @@ static int ohci_pci_start (struct usb_hcd *hcd)
}
#endif /* CONFIG_PM */
- ret = ohci_run (ohci);
+ ret = ohci_run(hcd);
if (ret < 0) {
ohci_err (ohci, "can't start\n");
ohci_stop (hcd);
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index c3e7287..545c657 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -46,7 +46,7 @@ static int ohci_platform_start(struct usb_hcd *hcd)
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int err;
- err = ohci_run(ohci);
+ err = ohci_run(hcd);
if (err < 0) {
ohci_err(ohci, "can't start\n");
ohci_stop(hcd);
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index d329914..455e9b1 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -357,7 +357,6 @@ struct ohci_hcd {
* I/O memory used to communicate with the HC (dma-consistent)
*/
struct ohci_regs __iomem *regs;
-
/*
* main memory used to communicate with the HC (dma-consistent).
* hcd adds to schedule for a live hc any time, but removals finish
@@ -373,7 +372,6 @@ struct ohci_hcd {
struct ed *periodic [NUM_INTS]; /* shadow int_table */
void (*start_hnp)(struct ohci_hcd *ohci);
-
/*
* memory management for queue data structures
*/
@@ -392,7 +390,7 @@ struct ohci_hcd {
unsigned long next_statechange; /* suspend/resume */
u32 fminterval; /* saved register */
unsigned autostop:1; /* rh auto stopping/stopped */
-
+ u8 sbrn;
unsigned long flags; /* for HC bugs */
#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */
#define OHCI_QUIRK_SUPERIO 0x02 /* natsemi */
@@ -718,3 +716,29 @@ static inline u32 roothub_status (struct ohci_hcd *hc)
{ return ohci_readl (hc, &hc->regs->roothub.status); }
static inline u32 roothub_portstatus (struct ohci_hcd *hc, int i)
{ return read_roothub (hc, portstatus [i], 0xffe0fce0); }
+
+/* Declarations of things exported for use by ohci platform drivers */
+
+struct ohci_driver_overrides {
+ const char *product_desc;
+ size_t extra_priv_size;
+ int (*reset)(struct usb_hcd *hcd);
+};
+
+extern void ohci_init_driver(struct hc_driver *drv,
+ const struct ohci_driver_overrides *over);
+extern int ohci_init(struct ohci_hcd *ohci);
+extern int ohci_restart(struct ohci_hcd *ohci);
+#ifdef CONFIG_PM
+extern int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup);
+extern int ohci_resume(struct usb_hcd *hcd, bool hibernated);
+#else
+static inline int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+{
+ return 0;
+}
+static inline int ohci_resume(struct usb_hcd *hcd, bool hibernated)
+{
+ return 0;
+}
+#endif
--
1.7.9.5
^ permalink raw reply related [flat|nested] 4+ messages in thread* [RFC PATCH 2/2] USB: OHCI: make ohci-pci a separate driver
2013-05-07 9:48 [RFC PATCH 0/2] USB: OHCI: Start splitting up the driver Manjunath Goudar
2013-05-07 9:48 ` [RFC PATCH 1/2] USB: OHCI: prepare to make ohci-hcd a library module Manjunath Goudar
@ 2013-05-07 9:48 ` Manjunath Goudar
1 sibling, 0 replies; 4+ messages in thread
From: Manjunath Goudar @ 2013-05-07 9:48 UTC (permalink / raw)
To: linux-arm-kernel
This patch splits the PCI portion of ohci-hcd out into its
own separate driver module, called ohci-pci. Consistently with the
current practice, the decision whether to build this module is not
user-configurable. If OHCI_PCI are enabled then the module will
be built, always.
V2:
- few specific content of pci related code in ohci_pci_start function has been moved to ohci_pci_reset
and rest of the generic code is written in ohci_start of ohci-hcd.c file.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb at vger.kernel.org
---
drivers/usb/host/Kconfig | 9 ++-
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ohci-hcd.c | 19 +------
drivers/usb/host/ohci-pci.c | 129 +++++++++++++------------------------------
drivers/usb/host/ohci-q.c | 13 +++++
5 files changed, 60 insertions(+), 111 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 7a1a248..3620ecce 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -333,8 +333,13 @@ config USB_ISP1362_HCD
To compile this driver as a module, choose M here: the
module will be called isp1362-hcd.
+config USB_OHCI_PCI
+ tristate
+ depends on USB_OHCI_HCD && PCI
+ default y
+
config USB_OHCI_HCD
- tristate "OHCI HCD support"
+ tristate "OHCI HCD (USB 1.1) support"
depends on USB && USB_ARCH_HAS_OHCI
select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
select USB_OTG_UTILS if ARCH_OMAP
@@ -402,7 +407,7 @@ config USB_OHCI_HCD_PPC_OF
default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE
config USB_OHCI_HCD_PCI
- bool "OHCI support for PCI-bus USB controllers"
+ tristate "OHCI support for PCI-bus USB controllers"
depends on USB_OHCI_HCD && PCI && (STB03xxx || PPC_MPC52xx || USB_OHCI_HCD_PPC_OF)
default y
select USB_OHCI_LITTLE_ENDIAN
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index a38d76b..a20a8d9 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
+obj-$(CONFIG_USB_OHCI_PCI) += ohci-pci.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 7922c61..2e62e7d 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -95,7 +95,6 @@ static inline void sb800_prefetch(struct ohci_hcd *ohci, int on)
#include "ohci-mem.c"
#include "ohci-q.c"
-
/*
* On architectures with edge-triggered interrupts we must never return
* IRQ_NONE.
@@ -585,7 +584,6 @@ int ohci_init(struct ohci_hcd *ohci)
return ret;
}
EXPORT_SYMBOL_GPL(ohci_init);
-
/*-------------------------------------------------------------------------*/
/* Start an OHCI controller, set the BUS operational
@@ -1181,11 +1179,6 @@ MODULE_AUTHOR (DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE ("GPL");
-#ifdef CONFIG_PCI
-#include "ohci-pci.c"
-#define PCI_DRIVER ohci_pci_driver
-#endif
-
#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111)
#include "ohci-sa1111.c"
#define SA1111_DRIVER ohci_hcd_sa1111_driver
@@ -1281,7 +1274,7 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_platform_driver
#endif
-#if !defined(PCI_DRIVER) && \
+#if !IS_ENABLED(CONFIG_USB_OHCI_PCI) && \
!defined(PLATFORM_DRIVER) && \
!defined(OMAP1_PLATFORM_DRIVER) && \
!defined(OMAP3_PLATFORM_DRIVER) && \
@@ -1356,12 +1349,6 @@ static int __init ohci_hcd_mod_init(void)
goto error_sa1111;
#endif
-#ifdef PCI_DRIVER
- retval = pci_register_driver(&PCI_DRIVER);
- if (retval < 0)
- goto error_pci;
-#endif
-
#ifdef SM501_OHCI_DRIVER
retval = platform_driver_register(&SM501_OHCI_DRIVER);
if (retval < 0)
@@ -1455,10 +1442,6 @@ static int __init ohci_hcd_mod_init(void)
platform_driver_unregister(&SM501_OHCI_DRIVER);
error_sm501:
#endif
-#ifdef PCI_DRIVER
- pci_unregister_driver(&PCI_DRIVER);
- error_pci:
-#endif
#ifdef SA1111_DRIVER
sa1111_driver_unregister(&SA1111_DRIVER);
error_sa1111:
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 0b34b59..20f6187 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -14,12 +14,19 @@
* This file is licenced under the GPL.
*/
-#ifndef CONFIG_PCI
-#error "This file is PCI bus glue. CONFIG_PCI must be defined."
-#endif
-
-#include <linux/pci.h>
#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ohci.h"
+#include "pci-quirks.h"
+
+#define DRIVER_DESC "OHCI PCI platform driver"
+
+static const char hcd_name[] = "ohci-pci";
/*-------------------------------------------------------------------------*/
@@ -175,19 +182,6 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd)
return 0;
}
-static void sb800_prefetch(struct ohci_hcd *ohci, int on)
-{
- struct pci_dev *pdev;
- u16 misc;
-
- pdev = to_pci_dev(ohci_to_hcd(ohci)->self.controller);
- pci_read_config_word(pdev, 0x50, &misc);
- if (on == 0)
- pci_write_config_word(pdev, 0x50, misc & 0xfcff);
- else
- pci_write_config_word(pdev, 0x50, misc | 0x0300);
-}
-
/* List of quirks for OHCI */
static const struct pci_device_id ohci_pci_quirks[] = {
{
@@ -261,95 +255,27 @@ static int ohci_pci_reset (struct usb_hcd *hcd)
quirk = (void *)quirk_id->driver_data;
ret = quirk(hcd);
}
- }
- if (ret == 0) {
- ohci_hcd_init (ohci);
- return ohci_init (ohci);
- }
- return ret;
-}
-
-
-static int ohci_pci_start (struct usb_hcd *hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci (hcd);
- int ret;
-
#ifdef CONFIG_PM /* avoid warnings about unused pdev */
- if (hcd->self.controller) {
- struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
-
/* RWC may not be set for add-in PCI cards, since boot
* firmware probably ignored them. This transfers PCI
* PM wakeup capabilities.
*/
if (device_can_wakeup(&pdev->dev))
ohci->hc_control |= OHCI_CTRL_RWC;
- }
#endif /* CONFIG_PM */
-
- ret = ohci_run(hcd);
- if (ret < 0) {
- ohci_err (ohci, "can't start\n");
- ohci_stop (hcd);
}
+ if (ret == 0)
+ return ohci_init(ohci);
return ret;
}
+static struct hc_driver __read_mostly ohci_pci_hc_driver;
-/*-------------------------------------------------------------------------*/
-
-static const struct hc_driver ohci_pci_hc_driver = {
- .description = hcd_name,
- .product_desc = "OHCI Host Controller",
- .hcd_priv_size = sizeof(struct ohci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ohci_irq,
- .flags = HCD_MEMORY | HCD_USB11,
-
- /*
- * basic lifecycle operations
- */
+static const struct ohci_driver_overrides overrides = {
+ .product_desc = "OHCI PCI host controller",
.reset = ohci_pci_reset,
- .start = ohci_pci_start,
- .stop = ohci_stop,
- .shutdown = ohci_shutdown,
-
-#ifdef CONFIG_PM
- .pci_suspend = ohci_suspend,
- .pci_resume = ohci_resume,
-#endif
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ohci_urb_enqueue,
- .urb_dequeue = ohci_urb_dequeue,
- .endpoint_disable = ohci_endpoint_disable,
-
- /*
- * scheduling support
- */
- .get_frame_number = ohci_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = ohci_hub_status_data,
- .hub_control = ohci_hub_control,
-#ifdef CONFIG_PM
- .bus_suspend = ohci_bus_suspend,
- .bus_resume = ohci_bus_resume,
-#endif
- .start_port_reset = ohci_start_port_reset,
};
-/*-------------------------------------------------------------------------*/
-
-
static const struct pci_device_id pci_ids [] = { {
/* handle any USB OHCI controller */
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
@@ -377,3 +303,24 @@ static struct pci_driver ohci_pci_driver = {
},
#endif
};
+
+static int __init ohci_pci_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_pci_hc_driver, &overrides);
+ return pci_register_driver(&ohci_pci_driver);
+}
+module_init(ohci_pci_init);
+
+static void __exit ohci_pci_cleanup(void)
+{
+ pci_unregister_driver(&ohci_pci_driver);
+}
+module_exit(ohci_pci_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index 88731b7..a7e8139 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -29,6 +29,19 @@ static void urb_free_priv (struct ohci_hcd *hc, urb_priv_t *urb_priv)
kfree (urb_priv);
}
+static void sb800_prefetch(struct ohci_hcd *ohci, int on)
+{
+ struct pci_dev *pdev;
+ u16 misc;
+
+ pdev = to_pci_dev(ohci_to_hcd(ohci)->self.controller);
+ pci_read_config_word(pdev, 0x50, &misc);
+ if (on == 0)
+ pci_write_config_word(pdev, 0x50, misc & 0xfcff);
+ else
+ pci_write_config_word(pdev, 0x50, misc | 0x0300);
+}
+
/*-------------------------------------------------------------------------*/
/*
--
1.7.9.5
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