diff options
author | Scott Wood <scottwood@freescale.com> | 2014-04-08 20:27:17 (GMT) |
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committer | Scott Wood <scottwood@freescale.com> | 2014-04-08 20:27:25 (GMT) |
commit | 63f2cd32fb5f8541636f47cc4c7c53cf8284851f (patch) | |
tree | d8e66fde55f70332fd495907d529996e9568038b /drivers/usb/core | |
parent | 47d2261a3fa71cde24263559a4219a25e50d8c89 (diff) | |
parent | 2acf1c25b979aaae983bfd7c0c4dd04b31ccfc01 (diff) | |
download | linux-fsl-qoriq-63f2cd32fb5f8541636f47cc4c7c53cf8284851f.tar.xz |
Merge remote-tracking branch 'stable/linux-3.12.y' into sdk-v1.6.x
Signed-off-by: Scott Wood <scottwood@freescale.com>
Conflicts:
drivers/mmc/card/block.c
Diffstat (limited to 'drivers/usb/core')
-rw-r--r-- | drivers/usb/core/config.c | 11 | ||||
-rw-r--r-- | drivers/usb/core/driver.c | 3 | ||||
-rw-r--r-- | drivers/usb/core/hub.c | 98 | ||||
-rw-r--r-- | drivers/usb/core/quirks.c | 4 | ||||
-rw-r--r-- | drivers/usb/core/sysfs.c | 6 |
5 files changed, 73 insertions, 49 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index a6b2cab..6524383 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -651,10 +651,6 @@ void usb_destroy_configuration(struct usb_device *dev) * * hub-only!! ... and only in reset path, or usb_new_device() * (used by real hubs and virtual root hubs) - * - * NOTE: if this is a WUSB device and is not authorized, we skip the - * whole thing. A non-authorized USB device has no - * configurations. */ int usb_get_configuration(struct usb_device *dev) { @@ -666,8 +662,6 @@ int usb_get_configuration(struct usb_device *dev) struct usb_config_descriptor *desc; cfgno = 0; - if (dev->authorized == 0) /* Not really an error */ - goto out_not_authorized; result = -ENOMEM; if (ncfg > USB_MAXCONFIG) { dev_warn(ddev, "too many configurations: %d, " @@ -724,6 +718,10 @@ int usb_get_configuration(struct usb_device *dev) result = -ENOMEM; goto err; } + + if (dev->quirks & USB_QUIRK_DELAY_INIT) + msleep(100); + result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, bigbuffer, length); if (result < 0) { @@ -751,7 +749,6 @@ int usb_get_configuration(struct usb_device *dev) err: kfree(desc); -out_not_authorized: dev->descriptor.bNumConfigurations = cfgno; err2: if (result == -ENOMEM) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index f7841d4..689433c 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1790,6 +1790,9 @@ int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) struct usb_hcd *hcd = bus_to_hcd(udev->bus); int ret = -EPERM; + if (enable && !udev->usb2_hw_lpm_allowed) + return 0; + if (hcd->driver->set_usb2_hw_lpm) { ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, enable); if (!ret) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 24297c6..19f45e1 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1130,6 +1130,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_ENABLE); } + if (portchange & USB_PORT_STAT_C_RESET) { + need_debounce_delay = true; + usb_clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_RESET); + } if ((portchange & USB_PORT_STAT_C_BH_RESET) && hub_is_superspeed(hub->hdev)) { need_debounce_delay = true; @@ -1600,7 +1605,7 @@ static void hub_disconnect(struct usb_interface *intf) { struct usb_hub *hub = usb_get_intfdata(intf); struct usb_device *hdev = interface_to_usbdev(intf); - int i; + int port1; /* Take the hub off the event list and don't let it be added again */ spin_lock_irq(&hub_event_lock); @@ -1615,11 +1620,15 @@ static void hub_disconnect(struct usb_interface *intf) hub->error = 0; hub_quiesce(hub, HUB_DISCONNECT); - usb_set_intfdata (intf, NULL); + /* Avoid races with recursively_mark_NOTATTACHED() */ + spin_lock_irq(&device_state_lock); + port1 = hdev->maxchild; + hdev->maxchild = 0; + usb_set_intfdata(intf, NULL); + spin_unlock_irq(&device_state_lock); - for (i = 0; i < hdev->maxchild; i++) - usb_hub_remove_port_device(hub, i + 1); - hub->hdev->maxchild = 0; + for (; port1 > 0; --port1) + usb_hub_remove_port_device(hub, port1); if (hub->hdev->speed == USB_SPEED_HIGH) highspeed_hubs--; @@ -2228,18 +2237,13 @@ static int usb_enumerate_device(struct usb_device *udev) return err; } } - if (udev->wusb == 1 && udev->authorized == 0) { - udev->product = kstrdup("n/a (unauthorized)", GFP_KERNEL); - udev->manufacturer = kstrdup("n/a (unauthorized)", GFP_KERNEL); - udev->serial = kstrdup("n/a (unauthorized)", GFP_KERNEL); - } - else { - /* read the standard strings and cache them if present */ - udev->product = usb_cache_string(udev, udev->descriptor.iProduct); - udev->manufacturer = usb_cache_string(udev, - udev->descriptor.iManufacturer); - udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); - } + + /* read the standard strings and cache them if present */ + udev->product = usb_cache_string(udev, udev->descriptor.iProduct); + udev->manufacturer = usb_cache_string(udev, + udev->descriptor.iManufacturer); + udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); + err = usb_enumerate_device_otg(udev); if (err < 0) return err; @@ -2421,16 +2425,6 @@ int usb_deauthorize_device(struct usb_device *usb_dev) usb_dev->authorized = 0; usb_set_configuration(usb_dev, -1); - kfree(usb_dev->product); - usb_dev->product = kstrdup("n/a (unauthorized)", GFP_KERNEL); - kfree(usb_dev->manufacturer); - usb_dev->manufacturer = kstrdup("n/a (unauthorized)", GFP_KERNEL); - kfree(usb_dev->serial); - usb_dev->serial = kstrdup("n/a (unauthorized)", GFP_KERNEL); - - usb_destroy_configuration(usb_dev); - usb_dev->descriptor.bNumConfigurations = 0; - out_unauthorized: usb_unlock_device(usb_dev); return 0; @@ -2458,17 +2452,7 @@ int usb_authorize_device(struct usb_device *usb_dev) goto error_device_descriptor; } - kfree(usb_dev->product); - usb_dev->product = NULL; - kfree(usb_dev->manufacturer); - usb_dev->manufacturer = NULL; - kfree(usb_dev->serial); - usb_dev->serial = NULL; - usb_dev->authorized = 1; - result = usb_enumerate_device(usb_dev); - if (result < 0) - goto error_enumerate; /* Choose and set the configuration. This registers the interfaces * with the driver core and lets interface drivers bind to them. */ @@ -2484,7 +2468,6 @@ int usb_authorize_device(struct usb_device *usb_dev) } dev_info(&usb_dev->dev, "authorized to connect\n"); -error_enumerate: error_device_descriptor: usb_autosuspend_device(usb_dev); error_autoresume: @@ -3949,6 +3932,32 @@ static int hub_set_address(struct usb_device *udev, int devnum) return retval; } +/* + * There are reports of USB 3.0 devices that say they support USB 2.0 Link PM + * when they're plugged into a USB 2.0 port, but they don't work when LPM is + * enabled. + * + * Only enable USB 2.0 Link PM if the port is internal (hardwired), or the + * device says it supports the new USB 2.0 Link PM errata by setting the BESL + * support bit in the BOS descriptor. + */ +static void hub_set_initial_usb2_lpm_policy(struct usb_device *udev) +{ + int connect_type; + + if (!udev->usb2_hw_lpm_capable) + return; + + connect_type = usb_get_hub_port_connect_type(udev->parent, + udev->portnum); + + if ((udev->bos->ext_cap->bmAttributes & USB_BESL_SUPPORT) || + connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) { + udev->usb2_hw_lpm_allowed = 1; + usb_set_usb2_hardware_lpm(udev, 1); + } +} + /* Reset device, (re)assign address, get device descriptor. * Device connection must be stable, no more debouncing needed. * Returns device in USB_STATE_ADDRESS, except on error. @@ -4244,6 +4253,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, /* notify HCD that we have a device connected and addressed */ if (hcd->driver->update_device) hcd->driver->update_device(hcd, udev); + hub_set_initial_usb2_lpm_policy(udev); fail: if (retval) { hub_port_disable(hub, port1, 0); @@ -4801,8 +4811,9 @@ static void hub_events(void) hub->ports[i - 1]->child; dev_dbg(hub_dev, "warm reset port %d\n", i); - if (!udev || !(portstatus & - USB_PORT_STAT_CONNECTION)) { + if (!udev || + !(portstatus & USB_PORT_STAT_CONNECTION) || + udev->state == USB_STATE_NOTATTACHED) { status = hub_port_reset(hub, i, NULL, HUB_BH_RESET_TIME, true); @@ -5088,6 +5099,12 @@ static int usb_reset_and_verify_device(struct usb_device *udev) } parent_hub = usb_hub_to_struct_hub(parent_hdev); + /* Disable USB2 hardware LPM. + * It will be re-enabled by the enumeration process. + */ + if (udev->usb2_hw_lpm_enabled == 1) + usb_set_usb2_hardware_lpm(udev, 0); + bos = udev->bos; udev->bos = NULL; @@ -5195,6 +5212,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) done: /* Now that the alt settings are re-installed, enable LTM and LPM. */ + usb_set_usb2_hardware_lpm(udev, 1); usb_unlocked_enable_lpm(udev); usb_enable_ltm(udev); usb_release_bos_descriptor(udev); diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 01fe362..1053eb6 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -46,6 +46,10 @@ static const struct usb_device_id usb_quirk_list[] = { /* Microsoft LifeCam-VX700 v2.0 */ { USB_DEVICE(0x045e, 0x0770), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech HD Pro Webcams C920 and C930e */ + { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT }, + { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT }, + /* Logitech Quickcam Fusion */ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME }, diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 6d2c8ed..ca516ac 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -449,7 +449,7 @@ static ssize_t usb2_hardware_lpm_show(struct device *dev, struct usb_device *udev = to_usb_device(dev); const char *p; - if (udev->usb2_hw_lpm_enabled == 1) + if (udev->usb2_hw_lpm_allowed == 1) p = "enabled"; else p = "disabled"; @@ -469,8 +469,10 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev, ret = strtobool(buf, &value); - if (!ret) + if (!ret) { + udev->usb2_hw_lpm_allowed = value; ret = usb_set_usb2_hardware_lpm(udev, value); + } usb_unlock_device(udev); |