diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/endpoint.c | 4 | ||||
| -rw-r--r-- | drivers/usb/core/hub.c | 18 | ||||
| -rw-r--r-- | drivers/usb/core/message.c | 50 | ||||
| -rw-r--r-- | drivers/usb/core/sysfs.c | 22 | ||||
| -rw-r--r-- | drivers/usb/core/usb.c | 37 | ||||
| -rw-r--r-- | drivers/usb/core/usb.h | 4 |
6 files changed, 91 insertions, 44 deletions
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index 946fae43d622..e1710f260b4f 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -276,7 +276,7 @@ static void ep_device_release(struct device *dev) kfree(ep_dev); } -int usb_create_ep_files(struct device *parent, +int usb_create_ep_devs(struct device *parent, struct usb_host_endpoint *endpoint, struct usb_device *udev) { @@ -340,7 +340,7 @@ exit: return retval; } -void usb_remove_ep_files(struct usb_host_endpoint *endpoint) +void usb_remove_ep_devs(struct usb_host_endpoint *endpoint) { struct ep_device *ep_dev = endpoint->ep_dev; diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 5abdc11be1e5..756b8d9993fc 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1437,17 +1437,12 @@ void usb_disconnect(struct usb_device **pdev) usb_disable_device(udev, 0); usb_hcd_synchronize_unlinks(udev); + usb_remove_ep_devs(&udev->ep0); usb_unlock_device(udev); - /* Remove the device-specific files from sysfs. This must be - * done with udev unlocked, because some of the attribute - * routines try to acquire the device lock. - */ - usb_remove_sysfs_dev_files(udev); - /* Unregister the device. The device driver is responsible - * for removing the device files from usbfs and sysfs and for - * de-configuring the device. + * for de-configuring the device and invoking the remove-device + * notifier chain (used by usbfs and possibly others). */ device_del(&udev->dev); @@ -1654,8 +1649,8 @@ int usb_new_device(struct usb_device *udev) announce_device(udev); /* Register the device. The device driver is responsible - * for adding the device files to sysfs and for configuring - * the device. + * for configuring the device and invoking the add-device + * notifier chain (used by usbfs and possibly others). */ err = device_add(&udev->dev); if (err) { @@ -1663,8 +1658,7 @@ int usb_new_device(struct usb_device *udev) goto fail; } - /* put device-specific files into sysfs */ - usb_create_sysfs_dev_files(udev); + (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); return err; fail: diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index aadf29f09c45..7943901c641c 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1004,6 +1004,34 @@ int usb_clear_halt(struct usb_device *dev, int pipe) } EXPORT_SYMBOL_GPL(usb_clear_halt); +static int create_intf_ep_devs(struct usb_interface *intf) +{ + struct usb_device *udev = interface_to_usbdev(intf); + struct usb_host_interface *alt = intf->cur_altsetting; + int i; + + if (intf->ep_devs_created || intf->unregistering) + return 0; + + for (i = 0; i < alt->desc.bNumEndpoints; ++i) + (void) usb_create_ep_devs(&intf->dev, &alt->endpoint[i], udev); + intf->ep_devs_created = 1; + return 0; +} + +static void remove_intf_ep_devs(struct usb_interface *intf) +{ + struct usb_host_interface *alt = intf->cur_altsetting; + int i; + + if (!intf->ep_devs_created) + return; + + for (i = 0; i < alt->desc.bNumEndpoints; ++i) + usb_remove_ep_devs(&alt->endpoint[i]); + intf->ep_devs_created = 0; +} + /** * usb_disable_endpoint -- Disable an endpoint by address * @dev: the device whose endpoint is being disabled @@ -1092,7 +1120,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) dev_dbg(&dev->dev, "unregistering interface %s\n", dev_name(&interface->dev)); interface->unregistering = 1; - usb_remove_sysfs_intf_files(interface); + remove_intf_ep_devs(interface); device_del(&interface->dev); } @@ -1235,8 +1263,10 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) */ /* prevent submissions using previous endpoint settings */ - if (iface->cur_altsetting != alt) + if (iface->cur_altsetting != alt) { + remove_intf_ep_devs(iface); usb_remove_sysfs_intf_files(iface); + } usb_disable_interface(dev, iface); iface->cur_altsetting = alt; @@ -1272,9 +1302,10 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) * (Likewise, EP0 never "halts" on well designed devices.) */ usb_enable_interface(dev, iface); - if (device_is_registered(&iface->dev)) + if (device_is_registered(&iface->dev)) { usb_create_sysfs_intf_files(iface); - + create_intf_ep_devs(iface); + } return 0; } EXPORT_SYMBOL_GPL(usb_set_interface); @@ -1334,7 +1365,6 @@ int usb_reset_configuration(struct usb_device *dev) struct usb_interface *intf = config->interface[i]; struct usb_host_interface *alt; - usb_remove_sysfs_intf_files(intf); alt = usb_altnum_to_altsetting(intf, 0); /* No altsetting 0? We'll assume the first altsetting. @@ -1345,10 +1375,16 @@ int usb_reset_configuration(struct usb_device *dev) if (!alt) alt = &intf->altsetting[0]; + if (alt != intf->cur_altsetting) { + remove_intf_ep_devs(intf); + usb_remove_sysfs_intf_files(intf); + } intf->cur_altsetting = alt; usb_enable_interface(dev, intf); - if (device_is_registered(&intf->dev)) + if (device_is_registered(&intf->dev)) { usb_create_sysfs_intf_files(intf); + create_intf_ep_devs(intf); + } } return 0; } @@ -1682,7 +1718,7 @@ free_interfaces: dev_name(&intf->dev), ret); continue; } - usb_create_sysfs_intf_files(intf); + create_intf_ep_devs(intf); } usb_autosuspend_device(dev); diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 0f0ccf640114..4cc2456ef3be 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -629,9 +629,6 @@ int usb_create_sysfs_dev_files(struct usb_device *udev) struct device *dev = &udev->dev; int retval; - /* Unforunately these attributes cannot be created before - * the uevent is broadcast. - */ retval = device_create_bin_file(dev, &dev_bin_attr_descriptors); if (retval) goto error; @@ -643,11 +640,7 @@ int usb_create_sysfs_dev_files(struct usb_device *udev) retval = add_power_attributes(dev); if (retval) goto error; - - retval = usb_create_ep_files(dev, &udev->ep0, udev); - if (retval) - goto error; - return 0; + return retval; error: usb_remove_sysfs_dev_files(udev); return retval; @@ -657,7 +650,6 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev) { struct device *dev = &udev->dev; - usb_remove_ep_files(&udev->ep0); remove_power_attributes(dev); remove_persist_attributes(dev); device_remove_bin_file(dev, &dev_bin_attr_descriptors); @@ -816,36 +808,24 @@ int usb_create_sysfs_intf_files(struct usb_interface *intf) { struct usb_device *udev = interface_to_usbdev(intf); struct usb_host_interface *alt = intf->cur_altsetting; - int i; int retval; if (intf->sysfs_files_created || intf->unregistering) return 0; - /* The interface string may be present in some altsettings - * and missing in others. Hence its attribute cannot be created - * before the uevent is broadcast. - */ if (alt->string == NULL) alt->string = usb_cache_string(udev, alt->desc.iInterface); if (alt->string) retval = device_create_file(&intf->dev, &dev_attr_interface); - for (i = 0; i < alt->desc.bNumEndpoints; ++i) - usb_create_ep_files(&intf->dev, &alt->endpoint[i], udev); intf->sysfs_files_created = 1; return 0; } void usb_remove_sysfs_intf_files(struct usb_interface *intf) { - struct usb_host_interface *alt = intf->cur_altsetting; - int i; - if (!intf->sysfs_files_created) return; - for (i = 0; i < alt->desc.bNumEndpoints; ++i) - usb_remove_ep_files(&alt->endpoint[i]); device_remove_file(&intf->dev, &dev_attr_interface); intf->sysfs_files_created = 0; } diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 4c98f3975afe..c0821564a3fe 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -971,6 +971,37 @@ int usb_disabled(void) EXPORT_SYMBOL_GPL(usb_disabled); /* + * Notifications of device and interface registration + */ +static int usb_bus_notify(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct device *dev = data; + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + if (dev->type == &usb_device_type) + (void) usb_create_sysfs_dev_files(to_usb_device(dev)); + else if (dev->type == &usb_if_device_type) + (void) usb_create_sysfs_intf_files( + to_usb_interface(dev)); + break; + + case BUS_NOTIFY_DEL_DEVICE: + if (dev->type == &usb_device_type) + usb_remove_sysfs_dev_files(to_usb_device(dev)); + else if (dev->type == &usb_if_device_type) + usb_remove_sysfs_intf_files(to_usb_interface(dev)); + break; + } + return 0; +} + +static struct notifier_block usb_bus_nb = { + .notifier_call = usb_bus_notify, +}; + +/* * Init */ static int __init usb_init(void) @@ -987,6 +1018,9 @@ static int __init usb_init(void) retval = bus_register(&usb_bus_type); if (retval) goto bus_register_failed; + retval = bus_register_notifier(&usb_bus_type, &usb_bus_nb); + if (retval) + goto bus_notifier_failed; retval = usb_host_init(); if (retval) goto host_init_failed; @@ -1021,6 +1055,8 @@ driver_register_failed: major_init_failed: usb_host_cleanup(); host_init_failed: + bus_unregister_notifier(&usb_bus_type, &usb_bus_nb); +bus_notifier_failed: bus_unregister(&usb_bus_type); bus_register_failed: ksuspend_usb_cleanup(); @@ -1044,6 +1080,7 @@ static void __exit usb_exit(void) usb_devio_cleanup(); usb_hub_cleanup(); usb_host_cleanup(); + bus_unregister_notifier(&usb_bus_type, &usb_bus_nb); bus_unregister(&usb_bus_type); ksuspend_usb_cleanup(); } diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 9fb195665fa8..381eae90c3b7 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -6,10 +6,10 @@ extern int usb_create_sysfs_dev_files(struct usb_device *dev); extern void usb_remove_sysfs_dev_files(struct usb_device *dev); extern int usb_create_sysfs_intf_files(struct usb_interface *intf); extern void usb_remove_sysfs_intf_files(struct usb_interface *intf); -extern int usb_create_ep_files(struct device *parent, +extern int usb_create_ep_devs(struct device *parent, struct usb_host_endpoint *endpoint, struct usb_device *udev); -extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint); +extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint); extern void usb_enable_endpoint(struct usb_device *dev, struct usb_host_endpoint *ep); |