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-rw-r--r--drivers/usb/core/devio.c20
-rw-r--r--drivers/usb/core/driver.c2
-rw-r--r--drivers/usb/core/hcd-pci.c117
-rw-r--r--drivers/usb/core/hcd.h1
-rw-r--r--drivers/usb/core/hub.c4
-rw-r--r--drivers/usb/core/inode.c1
-rw-r--r--drivers/usb/core/message.c40
-rw-r--r--drivers/usb/core/usb.h6
8 files changed, 69 insertions, 122 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 26fece124e0e..7513bb083c15 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1700,7 +1700,7 @@ const struct file_operations usbdev_file_operations = {
.release = usbdev_release,
};
-void usb_fs_classdev_common_remove(struct usb_device *udev)
+static void usbdev_remove(struct usb_device *udev)
{
struct dev_state *ps;
struct siginfo sinfo;
@@ -1742,10 +1742,15 @@ static void usb_classdev_remove(struct usb_device *dev)
{
if (dev->usb_classdev)
device_unregister(dev->usb_classdev);
- usb_fs_classdev_common_remove(dev);
}
-static int usb_classdev_notify(struct notifier_block *self,
+#else
+#define usb_classdev_add(dev) 0
+#define usb_classdev_remove(dev) do {} while (0)
+
+#endif
+
+static int usbdev_notify(struct notifier_block *self,
unsigned long action, void *dev)
{
switch (action) {
@@ -1755,15 +1760,15 @@ static int usb_classdev_notify(struct notifier_block *self,
break;
case USB_DEVICE_REMOVE:
usb_classdev_remove(dev);
+ usbdev_remove(dev);
break;
}
return NOTIFY_OK;
}
static struct notifier_block usbdev_nb = {
- .notifier_call = usb_classdev_notify,
+ .notifier_call = usbdev_notify,
};
-#endif
static struct cdev usb_device_cdev;
@@ -1798,9 +1803,8 @@ int __init usb_devio_init(void)
* to /sys/dev
*/
usb_classdev_class->dev_kobj = NULL;
-
- usb_register_notify(&usbdev_nb);
#endif
+ usb_register_notify(&usbdev_nb);
out:
return retval;
@@ -1811,8 +1815,8 @@ error_cdev:
void usb_devio_cleanup(void)
{
-#ifdef CONFIG_USB_DEVICE_CLASS
usb_unregister_notify(&usbdev_nb);
+#ifdef CONFIG_USB_DEVICE_CLASS
class_destroy(usb_classdev_class);
#endif
cdev_del(&usb_device_cdev);
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 98760553bc95..d0a21a5f8201 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -284,7 +284,7 @@ static int usb_unbind_interface(struct device *dev)
* supports "soft" unbinding.
*/
if (!driver->soft_unbind)
- usb_disable_interface(udev, intf);
+ usb_disable_interface(udev, intf, false);
driver->disconnect(intf);
usb_cancel_queued_reset(intf);
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 507741ed4482..c54fc40458b1 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -128,7 +128,6 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
}
pci_set_master(dev);
- device_set_wakeup_enable(&dev->dev, 1);
retval = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
if (retval != 0)
@@ -201,6 +200,7 @@ int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message)
struct usb_hcd *hcd = pci_get_drvdata(dev);
int retval = 0;
int wake, w;
+ int has_pci_pm;
/* Root hub suspend should have stopped all downstream traffic,
* and all bus master traffic. And done so for both the interface
@@ -230,6 +230,15 @@ int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message)
synchronize_irq(dev->irq);
+ /* Downstream ports from this root hub should already be quiesced, so
+ * there will be no DMA activity. Now we can shut down the upstream
+ * link (except maybe for PME# resume signaling) and enter some PCI
+ * low power state, if the hardware allows.
+ */
+ pci_disable_device(dev);
+
+ pci_save_state(dev);
+
/* Don't fail on error to enable wakeup. We rely on pci code
* to reject requests the hardware can't implement, rather
* than coding the same thing.
@@ -241,35 +250,6 @@ int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message)
wake = w;
dev_dbg(&dev->dev, "wakeup: %d\n", wake);
- /* Downstream ports from this root hub should already be quiesced, so
- * there will be no DMA activity. Now we can shut down the upstream
- * link (except maybe for PME# resume signaling) and enter some PCI
- * low power state, if the hardware allows.
- */
- pci_disable_device(dev);
- done:
- return retval;
-}
-EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend);
-
-/**
- * usb_hcd_pci_suspend_late - suspend a PCI-based HCD after IRQs are disabled
- * @dev: USB Host Controller being suspended
- * @message: Power Management message describing this state transition
- *
- * Store this function in the HCD's struct pci_driver as .suspend_late.
- */
-int usb_hcd_pci_suspend_late(struct pci_dev *dev, pm_message_t message)
-{
- int retval = 0;
- int has_pci_pm;
-
- /* We might already be suspended (runtime PM -- not yet written) */
- if (dev->current_state != PCI_D0)
- goto done;
-
- pci_save_state(dev);
-
/* Don't change state if we don't need to */
if (message.event == PM_EVENT_FREEZE ||
message.event == PM_EVENT_PRETHAW) {
@@ -315,7 +295,7 @@ int usb_hcd_pci_suspend_late(struct pci_dev *dev, pm_message_t message)
done:
return retval;
}
-EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend_late);
+EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend);
/**
* usb_hcd_pci_resume_early - resume a PCI-based HCD before IRQs are enabled
@@ -325,65 +305,8 @@ EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend_late);
*/
int usb_hcd_pci_resume_early(struct pci_dev *dev)
{
- int retval = 0;
- pci_power_t state = dev->current_state;
-
-#ifdef CONFIG_PPC_PMAC
- /* Reenable ASIC clocks for USB */
- if (machine_is(powermac)) {
- struct device_node *of_node;
-
- of_node = pci_device_to_OF_node(dev);
- if (of_node)
- pmac_call_feature(PMAC_FTR_USB_ENABLE,
- of_node, 0, 1);
- }
-#endif
-
- /* NOTE: chip docs cover clean "real suspend" cases (what Linux
- * calls "standby", "suspend to RAM", and so on). There are also
- * dirty cases when swsusp fakes a suspend in "shutdown" mode.
- */
- if (state != PCI_D0) {
-#ifdef DEBUG
- int pci_pm;
- u16 pmcr;
-
- pci_pm = pci_find_capability(dev, PCI_CAP_ID_PM);
- pci_read_config_word(dev, pci_pm + PCI_PM_CTRL, &pmcr);
- pmcr &= PCI_PM_CTRL_STATE_MASK;
- if (pmcr) {
- /* Clean case: power to USB and to HC registers was
- * maintained; remote wakeup is easy.
- */
- dev_dbg(&dev->dev, "resume from PCI D%d\n", pmcr);
- } else {
- /* Clean: HC lost Vcc power, D0 uninitialized
- * + Vaux may have preserved port and transceiver
- * state ... for remote wakeup from D3cold
- * + or not; HCD must reinit + re-enumerate
- *
- * Dirty: D0 semi-initialized cases with swsusp
- * + after BIOS init
- * + after Linux init (HCD statically linked)
- */
- dev_dbg(&dev->dev, "resume from previous PCI D%d\n",
- state);
- }
-#endif
-
- retval = pci_set_power_state(dev, PCI_D0);
- } else {
- /* Same basic cases: clean (powered/not), dirty */
- dev_dbg(&dev->dev, "PCI legacy resume\n");
- }
-
- if (retval < 0)
- dev_err(&dev->dev, "can't resume: %d\n", retval);
- else
- pci_restore_state(dev);
-
- return retval;
+ pci_restore_state(dev);
+ return 0;
}
EXPORT_SYMBOL_GPL(usb_hcd_pci_resume_early);
@@ -398,6 +321,18 @@ int usb_hcd_pci_resume(struct pci_dev *dev)
struct usb_hcd *hcd;
int retval;
+#ifdef CONFIG_PPC_PMAC
+ /* Reenable ASIC clocks for USB */
+ if (machine_is(powermac)) {
+ struct device_node *of_node;
+
+ of_node = pci_device_to_OF_node(dev);
+ if (of_node)
+ pmac_call_feature(PMAC_FTR_USB_ENABLE,
+ of_node, 0, 1);
+ }
+#endif
+
hcd = pci_get_drvdata(dev);
if (hcd->state != HC_STATE_SUSPENDED) {
dev_dbg(hcd->self.controller,
@@ -405,6 +340,8 @@ int usb_hcd_pci_resume(struct pci_dev *dev)
return 0;
}
+ pci_enable_wake(dev, PCI_D0, false);
+
retval = pci_enable_device(dev);
if (retval < 0) {
dev_err(&dev->dev, "can't re-enable after resume, %d!\n",
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 572d2cf46e8d..5b94a56bec23 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -257,7 +257,6 @@ extern void usb_hcd_pci_remove(struct pci_dev *dev);
#ifdef CONFIG_PM
extern int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t msg);
-extern int usb_hcd_pci_suspend_late(struct pci_dev *dev, pm_message_t msg);
extern int usb_hcd_pci_resume_early(struct pci_dev *dev);
extern int usb_hcd_pci_resume(struct pci_dev *dev);
#endif /* CONFIG_PM */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 94d5ee263c20..cd50d86029e7 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2382,8 +2382,8 @@ static int hub_port_debounce(struct usb_hub *hub, int port1)
void usb_ep0_reinit(struct usb_device *udev)
{
- usb_disable_endpoint(udev, 0 + USB_DIR_IN);
- usb_disable_endpoint(udev, 0 + USB_DIR_OUT);
+ usb_disable_endpoint(udev, 0 + USB_DIR_IN, true);
+ usb_disable_endpoint(udev, 0 + USB_DIR_OUT, true);
usb_enable_endpoint(udev, &udev->ep0, true);
}
EXPORT_SYMBOL_GPL(usb_ep0_reinit);
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 2a129cb7bb56..dff5760a37f6 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -717,7 +717,6 @@ static void usbfs_remove_device(struct usb_device *dev)
fs_remove_file (dev->usbfs_dentry);
dev->usbfs_dentry = NULL;
}
- usb_fs_classdev_common_remove(dev);
}
static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index de51667dd64d..31fb204f44c6 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1039,14 +1039,15 @@ static void remove_intf_ep_devs(struct usb_interface *intf)
* @dev: the device whose endpoint is being disabled
* @epaddr: the endpoint's address. Endpoint number for output,
* endpoint number + USB_DIR_IN for input
+ * @reset_hardware: flag to erase any endpoint state stored in the
+ * controller hardware
*
- * Deallocates hcd/hardware state for this endpoint ... and nukes all
- * pending urbs.
- *
- * If the HCD hasn't registered a disable() function, this sets the
- * endpoint's maxpacket size to 0 to prevent further submissions.
+ * Disables the endpoint for URB submission and nukes all pending URBs.
+ * If @reset_hardware is set then also deallocates hcd/hardware state
+ * for the endpoint.
*/
-void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr)
+void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
+ bool reset_hardware)
{
unsigned int epnum = epaddr & USB_ENDPOINT_NUMBER_MASK;
struct usb_host_endpoint *ep;
@@ -1056,15 +1057,18 @@ void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr)
if (usb_endpoint_out(epaddr)) {
ep = dev->ep_out[epnum];
- dev->ep_out[epnum] = NULL;
+ if (reset_hardware)
+ dev->ep_out[epnum] = NULL;
} else {
ep = dev->ep_in[epnum];
- dev->ep_in[epnum] = NULL;
+ if (reset_hardware)
+ dev->ep_in[epnum] = NULL;
}
if (ep) {
ep->enabled = 0;
usb_hcd_flush_endpoint(dev, ep);
- usb_hcd_disable_endpoint(dev, ep);
+ if (reset_hardware)
+ usb_hcd_disable_endpoint(dev, ep);
}
}
@@ -1072,17 +1076,21 @@ void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr)
* usb_disable_interface -- Disable all endpoints for an interface
* @dev: the device whose interface is being disabled
* @intf: pointer to the interface descriptor
+ * @reset_hardware: flag to erase any endpoint state stored in the
+ * controller hardware
*
* Disables all the endpoints for the interface's current altsetting.
*/
-void usb_disable_interface(struct usb_device *dev, struct usb_interface *intf)
+void usb_disable_interface(struct usb_device *dev, struct usb_interface *intf,
+ bool reset_hardware)
{
struct usb_host_interface *alt = intf->cur_altsetting;
int i;
for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
usb_disable_endpoint(dev,
- alt->endpoint[i].desc.bEndpointAddress);
+ alt->endpoint[i].desc.bEndpointAddress,
+ reset_hardware);
}
}
@@ -1103,8 +1111,8 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
dev_dbg(&dev->dev, "%s nuking %s URBs\n", __func__,
skip_ep0 ? "non-ep0" : "all");
for (i = skip_ep0; i < 16; ++i) {
- usb_disable_endpoint(dev, i);
- usb_disable_endpoint(dev, i + USB_DIR_IN);
+ usb_disable_endpoint(dev, i, true);
+ usb_disable_endpoint(dev, i + USB_DIR_IN, true);
}
dev->toggle[0] = dev->toggle[1] = 0;
@@ -1274,7 +1282,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
remove_intf_ep_devs(iface);
usb_remove_sysfs_intf_files(iface);
}
- usb_disable_interface(dev, iface);
+ usb_disable_interface(dev, iface, true);
iface->cur_altsetting = alt;
@@ -1353,8 +1361,8 @@ int usb_reset_configuration(struct usb_device *dev)
*/
for (i = 1; i < 16; ++i) {
- usb_disable_endpoint(dev, i);
- usb_disable_endpoint(dev, i + USB_DIR_IN);
+ usb_disable_endpoint(dev, i, true);
+ usb_disable_endpoint(dev, i + USB_DIR_IN, true);
}
config = dev->actconfig;
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 386177867a8a..79d8a9ea559b 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -15,9 +15,10 @@ extern void usb_enable_endpoint(struct usb_device *dev,
struct usb_host_endpoint *ep, bool reset_toggle);
extern void usb_enable_interface(struct usb_device *dev,
struct usb_interface *intf, bool reset_toggles);
-extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr);
+extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
+ bool reset_hardware);
extern void usb_disable_interface(struct usb_device *dev,
- struct usb_interface *intf);
+ struct usb_interface *intf, bool reset_hardware);
extern void usb_release_interface_cache(struct kref *ref);
extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
extern int usb_deauthorize_device(struct usb_device *);
@@ -151,7 +152,6 @@ extern struct usb_driver usbfs_driver;
extern const struct file_operations usbfs_devices_fops;
extern const struct file_operations usbdev_file_operations;
extern void usbfs_conn_disc_event(void);
-extern void usb_fs_classdev_common_remove(struct usb_device *udev);
extern int usb_devio_init(void);
extern void usb_devio_cleanup(void);