diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/devio.c | 169 | ||||
| -rw-r--r-- | drivers/usb/core/driver.c | 48 | ||||
| -rw-r--r-- | drivers/usb/core/file.c | 2 | ||||
| -rw-r--r-- | drivers/usb/core/hcd.c | 10 | ||||
| -rw-r--r-- | drivers/usb/core/hub.c | 139 | ||||
| -rw-r--r-- | drivers/usb/core/message.c | 16 | ||||
| -rw-r--r-- | drivers/usb/core/quirks.c | 151 | ||||
| -rw-r--r-- | drivers/usb/core/sysfs.c | 15 | ||||
| -rw-r--r-- | drivers/usb/core/usb.c | 1 | ||||
| -rw-r--r-- | drivers/usb/core/usb.h | 13 |
10 files changed, 414 insertions, 150 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e0f107948eba..ebb8a9de8b5f 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -47,6 +47,7 @@ #include <linux/notifier.h> #include <linux/security.h> #include <linux/user_namespace.h> +#include <linux/scatterlist.h> #include <asm/uaccess.h> #include <asm/byteorder.h> #include <linux/moduleparam.h> @@ -55,6 +56,7 @@ #define USB_MAXBUS 64 #define USB_DEVICE_MAX USB_MAXBUS * 128 +#define USB_SG_SIZE 16384 /* split-size for large txs */ /* Mutual exclusion for removal, open, and release */ DEFINE_MUTEX(usbfs_mutex); @@ -285,9 +287,16 @@ static struct async *alloc_async(unsigned int numisoframes) static void free_async(struct async *as) { + int i; + put_pid(as->pid); if (as->cred) put_cred(as->cred); + for (i = 0; i < as->urb->num_sgs; i++) { + if (sg_page(&as->urb->sg[i])) + kfree(sg_virt(&as->urb->sg[i])); + } + kfree(as->urb->sg); kfree(as->urb->transfer_buffer); kfree(as->urb->setup_packet); usb_free_urb(as->urb); @@ -388,6 +397,53 @@ static void snoop_urb(struct usb_device *udev, } } +static void snoop_urb_data(struct urb *urb, unsigned len) +{ + int i, size; + + if (!usbfs_snoop) + return; + + if (urb->num_sgs == 0) { + print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1, + urb->transfer_buffer, len, 1); + return; + } + + for (i = 0; i < urb->num_sgs && len; i++) { + size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len; + print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1, + sg_virt(&urb->sg[i]), size, 1); + len -= size; + } +} + +static int copy_urb_data_to_user(u8 __user *userbuffer, struct urb *urb) +{ + unsigned i, len, size; + + if (urb->number_of_packets > 0) /* Isochronous */ + len = urb->transfer_buffer_length; + else /* Non-Isoc */ + len = urb->actual_length; + + if (urb->num_sgs == 0) { + if (copy_to_user(userbuffer, urb->transfer_buffer, len)) + return -EFAULT; + return 0; + } + + for (i = 0; i < urb->num_sgs && len; i++) { + size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len; + if (copy_to_user(userbuffer, sg_virt(&urb->sg[i]), size)) + return -EFAULT; + userbuffer += size; + len -= size; + } + + return 0; +} + #define AS_CONTINUATION 1 #define AS_UNLINK 2 @@ -454,9 +510,10 @@ static void async_completed(struct urb *urb) } snoop(&urb->dev->dev, "urb complete\n"); snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length, - as->status, COMPLETE, - ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_OUT) ? - NULL : urb->transfer_buffer, urb->actual_length); + as->status, COMPLETE, NULL, 0); + if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN) + snoop_urb_data(urb, urb->actual_length); + if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET && as->status != -ENOENT) cancel_bulk_urbs(ps, as->bulk_addr); @@ -1114,8 +1171,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, struct async *as = NULL; struct usb_ctrlrequest *dr = NULL; unsigned int u, totlen, isofrmlen; - int ret, ifnum = -1; - int is_in; + int i, ret, is_in, num_sgs = 0, ifnum = -1; + void *buf; if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP | USBDEVFS_URB_SHORT_NOT_OK | @@ -1199,6 +1256,9 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, goto interrupt_urb; } uurb->number_of_packets = 0; + num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE); + if (num_sgs == 1 || num_sgs > ps->dev->bus->sg_tablesize) + num_sgs = 0; break; case USBDEVFS_URB_TYPE_INTERRUPT: @@ -1255,26 +1315,67 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, ret = -ENOMEM; goto error; } - u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length; + + u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length + + num_sgs * sizeof(struct scatterlist); ret = usbfs_increase_memory_usage(u); if (ret) goto error; as->mem_usage = u; - if (uurb->buffer_length > 0) { + if (num_sgs) { + as->urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist), + GFP_KERNEL); + if (!as->urb->sg) { + ret = -ENOMEM; + goto error; + } + as->urb->num_sgs = num_sgs; + sg_init_table(as->urb->sg, as->urb->num_sgs); + + totlen = uurb->buffer_length; + for (i = 0; i < as->urb->num_sgs; i++) { + u = (totlen > USB_SG_SIZE) ? USB_SG_SIZE : totlen; + buf = kmalloc(u, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto error; + } + sg_set_buf(&as->urb->sg[i], buf, u); + + if (!is_in) { + if (copy_from_user(buf, uurb->buffer, u)) { + ret = -EFAULT; + goto error; + } + } + totlen -= u; + } + } else if (uurb->buffer_length > 0) { as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL); if (!as->urb->transfer_buffer) { ret = -ENOMEM; goto error; } - /* Isochronous input data may end up being discontiguous - * if some of the packets are short. Clear the buffer so - * that the gaps don't leak kernel data to userspace. - */ - if (is_in && uurb->type == USBDEVFS_URB_TYPE_ISO) + + if (!is_in) { + if (copy_from_user(as->urb->transfer_buffer, + uurb->buffer, + uurb->buffer_length)) { + ret = -EFAULT; + goto error; + } + } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) { + /* + * Isochronous input data may end up being + * discontiguous if some of the packets are short. + * Clear the buffer so that the gaps don't leak + * kernel data to userspace. + */ memset(as->urb->transfer_buffer, 0, uurb->buffer_length); + } } as->urb->dev = ps->dev; as->urb->pipe = (uurb->type << 30) | @@ -1328,17 +1429,12 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, as->pid = get_pid(task_pid(current)); as->cred = get_current_cred(); security_task_getsecid(current, &as->secid); - if (!is_in && uurb->buffer_length > 0) { - if (copy_from_user(as->urb->transfer_buffer, uurb->buffer, - uurb->buffer_length)) { - ret = -EFAULT; - goto error; - } - } snoop_urb(ps->dev, as->userurb, as->urb->pipe, as->urb->transfer_buffer_length, 0, SUBMIT, - is_in ? NULL : as->urb->transfer_buffer, - uurb->buffer_length); + NULL, 0); + if (!is_in) + snoop_urb_data(as->urb, as->urb->transfer_buffer_length); + async_newpending(as); if (usb_endpoint_xfer_bulk(&ep->desc)) { @@ -1433,11 +1529,7 @@ static int processcompl(struct async *as, void __user * __user *arg) unsigned int i; if (as->userbuffer && urb->actual_length) { - if (urb->number_of_packets > 0) /* Isochronous */ - i = urb->transfer_buffer_length; - else /* Non-Isoc */ - i = urb->actual_length; - if (copy_to_user(as->userbuffer, urb->transfer_buffer, i)) + if (copy_urb_data_to_user(as->userbuffer, urb)) goto err_out; } if (put_user(as->status, &userurb->status)) @@ -1604,10 +1696,10 @@ static int processcompl_compat(struct async *as, void __user * __user *arg) void __user *addr = as->userurb; unsigned int i; - if (as->userbuffer && urb->actual_length) - if (copy_to_user(as->userbuffer, urb->transfer_buffer, - urb->actual_length)) + if (as->userbuffer && urb->actual_length) { + if (copy_urb_data_to_user(as->userbuffer, urb)) return -EFAULT; + } if (put_user(as->status, &userurb->status)) return -EFAULT; if (put_user(urb->actual_length, &userurb->actual_length)) @@ -1820,6 +1912,22 @@ static int proc_release_port(struct dev_state *ps, void __user *arg) return usb_hub_release_port(ps->dev, portnum, ps); } +static int proc_get_capabilities(struct dev_state *ps, void __user *arg) +{ + __u32 caps; + + caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM; + if (!ps->dev->bus->no_stop_on_short) + caps |= USBDEVFS_CAP_BULK_CONTINUATION; + if (ps->dev->bus->sg_tablesize) + caps |= USBDEVFS_CAP_BULK_SCATTER_GATHER; + + if (put_user(caps, (__u32 __user *)arg)) + return -EFAULT; + + return 0; +} + /* * NOTE: All requests here that have interface numbers as parameters * are assuming that somehow the configuration has been prevented from @@ -1990,6 +2098,9 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: RELEASE_PORT\n", __func__); ret = proc_release_port(ps, p); break; + case USBDEVFS_GET_CAPABILITIES: + ret = proc_get_capabilities(ps, p); + break; } usb_unlock_device(dev); if (ret >= 0) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index f536aebc958e..445455a4429b 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -367,6 +367,7 @@ static int usb_probe_interface(struct device *dev) return error; err: + usb_set_intfdata(intf, NULL); intf->needs_remote_wakeup = 0; intf->condition = USB_INTERFACE_UNBOUND; usb_cancel_queued_reset(intf); @@ -606,30 +607,19 @@ int usb_match_device(struct usb_device *dev, const struct usb_device_id *id) } /* returns 0 if no match, 1 if match */ -int usb_match_one_id(struct usb_interface *interface, - const struct usb_device_id *id) +int usb_match_one_id_intf(struct usb_device *dev, + struct usb_host_interface *intf, + const struct usb_device_id *id) { - struct usb_host_interface *intf; - struct usb_device *dev; - - /* proc_connectinfo in devio.c may call us with id == NULL. */ - if (id == NULL) - return 0; - - intf = interface->cur_altsetting; - dev = interface_to_usbdev(interface); - - if (!usb_match_device(dev, id)) - return 0; - - /* The interface class, subclass, and protocol should never be + /* The interface class, subclass, protocol and number should never be * checked for a match if the device class is Vendor Specific, * unless the match record specifies the Vendor ID. */ if (dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC && !(id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && (id->match_flags & (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS | - USB_DEVICE_ID_MATCH_INT_PROTOCOL))) + USB_DEVICE_ID_MATCH_INT_PROTOCOL | + USB_DEVICE_ID_MATCH_INT_NUMBER))) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) && @@ -644,8 +634,32 @@ int usb_match_one_id(struct usb_interface *interface, (id->bInterfaceProtocol != intf->desc.bInterfaceProtocol)) return 0; + if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) && + (id->bInterfaceNumber != intf->desc.bInterfaceNumber)) + return 0; + return 1; } + +/* returns 0 if no match, 1 if match */ +int usb_match_one_id(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_host_interface *intf; + struct usb_device *dev; + + /* proc_connectinfo in devio.c may call us with id == NULL. */ + if (id == NULL) + return 0; + + intf = interface->cur_altsetting; + dev = interface_to_usbdev(interface); + + if (!usb_match_device(dev, id)) + return 0; + + return usb_match_one_id_intf(dev, intf, id); +} EXPORT_SYMBOL_GPL(usb_match_one_id); /** diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index e673b26e598f..e5387a47ef6f 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -92,7 +92,7 @@ static int init_usb_class(void) } kref_init(&usb_class->kref); - usb_class->class = class_create(THIS_MODULE, "usb"); + usb_class->class = class_create(THIS_MODULE, "usbmisc"); if (IS_ERR(usb_class->class)) { result = IS_ERR(usb_class->class); printk(KERN_ERR "class_create failed for usb devices\n"); diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 190b1ec7bdcb..bc84106ac057 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1398,7 +1398,15 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { if (hcd->self.uses_dma) { if (urb->num_sgs) { - int n = dma_map_sg( + int n; + + /* We don't support sg for isoc transfers ! */ + if (usb_endpoint_xfer_isoc(&urb->ep->desc)) { + WARN_ON(1); + return -EINVAL; + } + + n = dma_map_sg( hcd->self.controller, urb->sg, urb->num_sgs, diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 8fb484984c86..821126eb8176 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -20,6 +20,7 @@ #include <linux/usb.h> #include <linux/usbdevice_fs.h> #include <linux/usb/hcd.h> +#include <linux/usb/otg.h> #include <linux/usb/quirks.h> #include <linux/kthread.h> #include <linux/mutex.h> @@ -81,7 +82,7 @@ struct usb_hub { u8 indicator[USB_MAXCHILDREN]; struct delayed_work leds; struct delayed_work init_work; - void **port_owners; + struct dev_state **port_owners; }; static inline int hub_is_superspeed(struct usb_device *hdev) @@ -1271,7 +1272,8 @@ static int hub_configure(struct usb_hub *hub, hdev->children = kzalloc(hdev->maxchild * sizeof(struct usb_device *), GFP_KERNEL); - hub->port_owners = kzalloc(hdev->maxchild * sizeof(void *), GFP_KERNEL); + hub->port_owners = kzalloc(hdev->maxchild * sizeof(struct dev_state *), + GFP_KERNEL); if (!hdev->children || !hub->port_owners) { ret = -ENOMEM; goto fail; @@ -1649,7 +1651,7 @@ hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data) * to one of these "claimed" ports, the program will "own" the device. */ static int find_port_owner(struct usb_device *hdev, unsigned port1, - void ***ppowner) + struct dev_state ***ppowner) { if (hdev->state == USB_STATE_NOTATTACHED) return -ENODEV; @@ -1664,10 +1666,11 @@ static int find_port_owner(struct usb_device *hdev, unsigned port1, } /* In the following three functions, the caller must hold hdev's lock */ -int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, void *owner) +int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, + struct dev_state *owner) { int rc; - void **powner; + struct dev_state **powner; rc = find_port_owner(hdev, port1, &powner); if (rc) @@ -1678,10 +1681,11 @@ int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, void *owner) return rc; } -int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void *owner) +int usb_hub_release_port(struct usb_device *hdev, unsigned port1, + struct dev_state *owner) { int rc; - void **powner; + struct dev_state **powner; rc = find_port_owner(hdev, port1, &powner); if (rc) @@ -1692,10 +1696,10 @@ int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void *owner) return rc; } -void usb_hub_release_all_ports(struct usb_device *hdev, void *owner) +void usb_hub_release_all_ports(struct usb_device *hdev, struct dev_state *owner) { int n; - void **powner; + struct dev_state **powner; n = find_port_owner(hdev, 1, &powner); if (n == 0) { @@ -2065,7 +2069,7 @@ static int usb_enumerate_device(struct usb_device *udev) if (err < 0) { dev_err(&udev->dev, "can't read configurations, error %d\n", err); - goto fail; + return err; } } if (udev->wusb == 1 && udev->authorized == 0) { @@ -2081,8 +2085,12 @@ static int usb_enumerate_device(struct usb_device *udev) udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); } err = usb_enumerate_device_otg(udev); -fail: - return err; + if (err < 0) + return err; + + usb_detect_interface_quirks(udev); + + return 0; } static void set_usb_port_removable(struct usb_device *udev) @@ -2611,6 +2619,50 @@ static int check_port_resume_type(struct usb_device *udev, return status; } +int usb_disable_ltm(struct usb_device *udev) +{ + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + + /* Check if the roothub and device supports LTM. */ + if (!usb_device_supports_ltm(hcd->self.root_hub) || + !usb_device_supports_ltm(udev)) + return 0; + + /* Clear Feature LTM Enable can only be sent if the device is + * configured. + */ + if (!udev->actconfig) + return 0; + + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_LTM_ENABLE, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} +EXPORT_SYMBOL_GPL(usb_disable_ltm); + +void usb_enable_ltm(struct usb_device *udev) +{ + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + + /* Check if the roothub and device supports LTM. */ + if (!usb_device_supports_ltm(hcd->self.root_hub) || + !usb_device_supports_ltm(udev)) + return; + + /* Set Feature LTM Enable can only be sent if the device is + * configured. + */ + if (!udev->actconfig) + return; + + usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_LTM_ENABLE, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} +EXPORT_SYMBOL_GPL(usb_enable_ltm); + #ifdef CONFIG_USB_SUSPEND /* @@ -2706,6 +2758,11 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_enabled == 1) usb_set_usb2_hardware_lpm(udev, 0); + if (usb_disable_ltm(udev)) { + dev_err(&udev->dev, "%s Failed to disable LTM before suspend\n.", + __func__); + return -ENOMEM; + } if (usb_unlocked_disable_lpm(udev)) { dev_err(&udev->dev, "%s Failed to disable LPM before suspend\n.", __func__); @@ -2735,7 +2792,8 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_capable == 1) usb_set_usb2_hardware_lpm(udev, 1); - /* Try to enable USB3 LPM again */ + /* Try to enable USB3 LTM and LPM again */ + usb_enable_ltm(udev); usb_unlocked_enable_lpm(udev); /* System sleep transitions should never fail */ @@ -2936,7 +2994,8 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_capable == 1) usb_set_usb2_hardware_lpm(udev, 1); - /* Try to enable USB3 LPM */ + /* Try to enable USB3 LTM and LPM */ + usb_enable_ltm(udev); usb_unlocked_enable_lpm(udev); } @@ -3489,6 +3548,15 @@ EXPORT_SYMBOL_GPL(usb_unlocked_disable_lpm); void usb_unlocked_enable_lpm(struct usb_device *udev) { } EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm); + +int usb_disable_ltm(struct usb_device *udev) +{ + return 0; +} +EXPORT_SYMBOL_GPL(usb_disable_ltm); + +void usb_enable_ltm(struct usb_device *udev) { } +EXPORT_SYMBOL_GPL(usb_enable_ltm); #endif @@ -4038,6 +4106,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, } } + if (hcd->phy && !hdev->parent) { + if (portstatus & USB_PORT_STAT_CONNECTION) + usb_phy_notify_connect(hcd->phy, port1); + else + usb_phy_notify_disconnect(hcd->phy, port1); + } + /* Return now if debouncing failed or nothing is connected or * the device was "removed". */ @@ -4672,6 +4747,23 @@ static int usb_reset_and_verify_device(struct usb_device *udev) } parent_hub = hdev_to_hub(parent_hdev); + /* Disable LPM and LTM while we reset the device and reinstall the alt + * settings. Device-initiated LPM settings, and system exit latency + * settings are cleared when the device is reset, so we have to set + * them up again. + */ + ret = usb_unlocked_disable_lpm(udev); + if (ret) { + dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__); + goto re_enumerate; + } + ret = usb_disable_ltm(udev); + if (ret) { + dev_err(&udev->dev, "%s Failed to disable LTM\n.", + __func__); + goto re_enumerate; + } + set_bit(port1, parent_hub->busy_bits); for (i = 0; i < SET_CONFIG_TRIES; ++i) { @@ -4699,22 +4791,11 @@ static int usb_reset_and_verify_device(struct usb_device *udev) goto done; mutex_lock(hcd->bandwidth_mutex); - /* Disable LPM while we reset the device and reinstall the alt settings. - * Device-initiated LPM settings, and system exit latency settings are - * cleared when the device is reset, so we have to set them up again. - */ - ret = usb_disable_lpm(udev); - if (ret) { - dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__); - mutex_unlock(hcd->bandwidth_mutex); - goto done; - } ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL); if (ret < 0) { dev_warn(&udev->dev, "Busted HC? Not enough HCD resources for " "old configuration.\n"); - usb_enable_lpm(udev); mutex_unlock(hcd->bandwidth_mutex); goto re_enumerate; } @@ -4726,7 +4807,6 @@ static int usb_reset_and_verify_device(struct usb_device *udev) dev_err(&udev->dev, "can't restore configuration #%d (error=%d)\n", udev->actconfig->desc.bConfigurationValue, ret); - usb_enable_lpm(udev); mutex_unlock(hcd->bandwidth_mutex); goto re_enumerate; } @@ -4765,17 +4845,18 @@ static int usb_reset_and_verify_device(struct usb_device *udev) desc->bInterfaceNumber, desc->bAlternateSetting, ret); - usb_unlocked_enable_lpm(udev); goto re_enumerate; } } - /* Now that the alt settings are re-installed, enable LPM. */ - usb_unlocked_enable_lpm(udev); done: + /* Now that the alt settings are re-installed, enable LTM and LPM. */ + usb_unlocked_enable_lpm(udev); + usb_enable_ltm(udev); return 0; re_enumerate: + /* LPM state doesn't matter when we're about to destroy the device. */ hub_port_logical_disconnect(parent_hub, port1); return -ENODEV; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index bdd1c6749d88..0ab7da2283e3 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1174,6 +1174,8 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) put_device(&dev->actconfig->interface[i]->dev); dev->actconfig->interface[i] = NULL; } + usb_unlocked_disable_lpm(dev); + usb_disable_ltm(dev); dev->actconfig = NULL; if (dev->state == USB_STATE_CONFIGURED) usb_set_device_state(dev, USB_STATE_ADDRESS); @@ -1559,7 +1561,7 @@ static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) if (add_uevent_var(env, "MODALIAS=usb:" - "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X", + "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02Xin%02X", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice), @@ -1568,7 +1570,8 @@ static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) usb_dev->descriptor.bDeviceProtocol, alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, - alt->desc.bInterfaceProtocol)) + alt->desc.bInterfaceProtocol, + alt->desc.bInterfaceNumber)) return -ENOMEM; return 0; @@ -1791,14 +1794,15 @@ free_interfaces: * installed, so that the xHCI driver can recalculate the U1/U2 * timeouts. */ - if (usb_disable_lpm(dev)) { + if (dev->actconfig && usb_disable_lpm(dev)) { dev_err(&dev->dev, "%s Failed to disable LPM\n.", __func__); mutex_unlock(hcd->bandwidth_mutex); return -ENOMEM; } ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL); if (ret < 0) { - usb_enable_lpm(dev); + if (dev->actconfig) + usb_enable_lpm(dev); mutex_unlock(hcd->bandwidth_mutex); usb_autosuspend_device(dev); goto free_interfaces; @@ -1818,7 +1822,7 @@ free_interfaces: if (!cp) { usb_set_device_state(dev, USB_STATE_ADDRESS); usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL); - usb_enable_lpm(dev); + /* Leave LPM disabled while the device is unconfigured. */ mutex_unlock(hcd->bandwidth_mutex); usb_autosuspend_device(dev); goto free_interfaces; @@ -1876,6 +1880,8 @@ free_interfaces: /* Now that the interfaces are installed, re-enable LPM. */ usb_unlocked_enable_lpm(dev); + /* Enable LTM if it was turned off by usb_disable_device. */ + usb_enable_ltm(dev); /* Now that all the interfaces are set up, register them * to trigger binding of drivers to interfaces. probe() diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 32d3adc315f5..f15501f4c585 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -15,17 +15,22 @@ #include <linux/usb/quirks.h> #include "usb.h" -/* List of quirky USB devices. Please keep this list ordered by: +/* Lists of quirky USB devices, split in device quirks and interface quirks. + * Device quirks are applied at the very beginning of the enumeration process, + * right after reading the device descriptor. They can thus only match on device + * information. + * + * Interface quirks are applied after reading all the configuration descriptors. + * They can match on both device and interface information. + * + * Note that the DELAY_INIT and HONOR_BNUMINTERFACES quirks do not make sense as + * interface quirks, as they only influence the enumeration process which is run + * before processing the interface quirks. + * + * Please keep the lists ordered by: * 1) Vendor ID * 2) Product ID * 3) Class ID - * - * as we want specific devices to be overridden first, and only after that, any - * class specific quirks. - * - * Right now the logic aborts if it finds a valid device in the table, we might - * want to change that in the future if it turns out that a whole class of - * devices is broken... */ static const struct usb_device_id usb_quirk_list[] = { /* CBM - Flash disk */ @@ -38,53 +43,23 @@ static const struct usb_device_id usb_quirk_list[] = { /* Creative SB Audigy 2 NX */ { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C200 */ - { USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C250 */ - { USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C300 */ - { USB_DEVICE(0x046d, 0x0805), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam B/C500 */ - { USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C600 */ - { USB_DEVICE(0x046d, 0x0808), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam Pro 9000 */ - { USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Fusion */ + { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C905 */ - { USB_DEVICE(0x046d, 0x080a), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Orbit MP */ + { USB_DEVICE(0x046d, 0x08c2), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C210 */ - { USB_DEVICE(0x046d, 0x0819), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Pro for Notebook */ + { USB_DEVICE(0x046d, 0x08c3), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C260 */ - { USB_DEVICE(0x046d, 0x081a), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Pro 5000 */ + { USB_DEVICE(0x046d, 0x08c5), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C310 */ - { USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam OEM Dell Notebook */ + { USB_DEVICE(0x046d, 0x08c6), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C910 */ - { USB_DEVICE(0x046d, 0x0821), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C160 */ - { USB_DEVICE(0x046d, 0x0824), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C270 */ - { USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam Pro 9000 */ - { USB_DEVICE(0x046d, 0x0990), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam E3500 */ - { USB_DEVICE(0x046d, 0x09a4), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam Vision Pro */ - { USB_DEVICE(0x046d, 0x09a6), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam OEM Cisco VT Camera II */ + { USB_DEVICE(0x046d, 0x08c7), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Harmony 700-series */ { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT }, @@ -156,16 +131,57 @@ static const struct usb_device_id usb_quirk_list[] = { { } /* terminating entry must be last */ }; -static const struct usb_device_id *find_id(struct usb_device *udev) +static const struct usb_device_id usb_interface_quirk_list[] = { + /* Logitech UVC Cameras */ + { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0), + .driver_info = USB_QUIRK_RESET_RESUME }, + + { } /* terminating entry must be last */ +}; + +static bool usb_match_any_interface(struct usb_device *udev, + const struct usb_device_id *id) { - const struct usb_device_id *id = usb_quirk_list; + unsigned int i; - for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass || - id->driver_info; id++) { - if (usb_match_device(udev, id)) - return id; + for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) { + struct usb_host_config *cfg = &udev->config[i]; + unsigned int j; + + for (j = 0; j < cfg->desc.bNumInterfaces; ++j) { + struct usb_interface_cache *cache; + struct usb_host_interface *intf; + + cache = cfg->intf_cache[j]; + if (cache->num_altsetting == 0) + continue; + + intf = &cache->altsetting[0]; + if (usb_match_one_id_intf(udev, intf, id)) + return true; + } + } + + return false; +} + +static u32 __usb_detect_quirks(struct usb_device *udev, + const struct usb_device_id *id) +{ + u32 quirks = 0; + + for (; id->match_flags; id++) { + if (!usb_match_device(udev, id)) + continue; + + if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) && + !usb_match_any_interface(udev, id)) + continue; + + quirks |= (u32)(id->driver_info); } - return NULL; + + return quirks; } /* @@ -173,14 +189,10 @@ static const struct usb_device_id *find_id(struct usb_device *udev) */ void usb_detect_quirks(struct usb_device *udev) { - const struct usb_device_id *id = usb_quirk_list; - - id = find_id(udev); - if (id) - udev->quirks = (u32)(id->driver_info); + udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", - udev->quirks); + udev->quirks); /* For the present, all devices default to USB-PERSIST enabled */ #if 0 /* was: #ifdef CONFIG_PM */ @@ -197,3 +209,16 @@ void usb_detect_quirks(struct usb_device *udev) udev->persist_enabled = 1; #endif /* CONFIG_PM */ } + +void usb_detect_interface_quirks(struct usb_device *udev) +{ + u32 quirks; + + quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); + if (quirks == 0) + return; + + dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n", + quirks); + udev->quirks |= quirks; +} diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 9a56e3adf476..682e8256b95d 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -253,6 +253,15 @@ show_removable(struct device *dev, struct device_attribute *attr, char *buf) } static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL); +static ssize_t +show_ltm_capable(struct device *dev, struct device_attribute *attr, char *buf) +{ + if (usb_device_supports_ltm(to_usb_device(dev))) + return sprintf(buf, "%s\n", "yes"); + return sprintf(buf, "%s\n", "no"); +} +static DEVICE_ATTR(ltm_capable, S_IRUGO, show_ltm_capable, NULL); + #ifdef CONFIG_PM static ssize_t @@ -649,6 +658,7 @@ static struct attribute *dev_attrs[] = { &dev_attr_authorized.attr, &dev_attr_remove.attr, &dev_attr_removable.attr, + &dev_attr_ltm_capable.attr, NULL, }; static struct attribute_group dev_attr_grp = { @@ -840,7 +850,7 @@ static ssize_t show_modalias(struct device *dev, alt = intf->cur_altsetting; return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X" - "ic%02Xisc%02Xip%02X\n", + "ic%02Xisc%02Xip%02Xin%02X\n", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct), le16_to_cpu(udev->descriptor.bcdDevice), @@ -849,7 +859,8 @@ static ssize_t show_modalias(struct device *dev, udev->descriptor.bDeviceProtocol, alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, - alt->desc.bInterfaceProtocol); + alt->desc.bInterfaceProtocol, + alt->desc.bInterfaceNumber); } static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 25d0c61c3f8a..cd8fb44a3e16 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -396,6 +396,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, dev->dev.dma_mask = bus->controller->dma_mask; set_dev_node(&dev->dev, dev_to_node(bus->controller)); dev->state = USB_STATE_ATTACHED; + dev->lpm_disable_count = 1; atomic_set(&dev->urbnum, 0); INIT_LIST_HEAD(&dev->ep0.urb_list); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 5c5c538ea73d..acb103c5c391 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -1,5 +1,7 @@ #include <linux/pm.h> +struct dev_state; + /* Functions local to drivers/usb/core/ */ extern int usb_create_sysfs_dev_files(struct usb_device *dev); @@ -24,6 +26,7 @@ extern void usb_disable_device(struct usb_device *dev, int skip_ep0); extern int usb_deauthorize_device(struct usb_device *); extern int usb_authorize_device(struct usb_device *); extern void usb_detect_quirks(struct usb_device *udev); +extern void usb_detect_interface_quirks(struct usb_device *udev); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, @@ -35,16 +38,20 @@ extern int usb_set_configuration(struct usb_device *dev, int configuration); extern int usb_choose_configuration(struct usb_device *udev); extern void usb_kick_khubd(struct usb_device *dev); +extern int usb_match_one_id_intf(struct usb_device *dev, + struct usb_host_interface *intf, + const struct usb_device_id *id); extern int usb_match_device(struct usb_device *dev, const struct usb_device_id *id); extern void usb_forced_unbind_intf(struct usb_interface *intf); extern void usb_rebind_intf(struct usb_interface *intf); extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port, - void *owner); + struct dev_state *owner); extern int usb_hub_release_port(struct usb_device *hdev, unsigned port, - void *owner); -extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner); + struct dev_state *owner); +extern void usb_hub_release_all_ports(struct usb_device *hdev, + struct dev_state *owner); extern bool usb_device_is_owned(struct usb_device *udev); extern int usb_hub_init(void); |