diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/devio.c | 3 | ||||
| -rw-r--r-- | drivers/usb/core/driver.c | 6 | ||||
| -rw-r--r-- | drivers/usb/core/hub.c | 18 | ||||
| -rw-r--r-- | drivers/usb/core/message.c | 8 | ||||
| -rw-r--r-- | drivers/usb/core/quirks.c | 3 | ||||
| -rw-r--r-- | drivers/usb/core/sysfs.c | 5 | ||||
| -rw-r--r-- | drivers/usb/core/usb-acpi.c | 65 | ||||
| -rw-r--r-- | drivers/usb/core/usb.c | 10 |
8 files changed, 96 insertions, 22 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 837f3e57f580..e501a03d6c70 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -279,8 +279,7 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma) } } - vma->vm_flags |= VM_IO; - vma->vm_flags |= (VM_DONTEXPAND | VM_DONTDUMP); + vm_flags_set(vma, VM_IO | VM_DONTEXPAND | VM_DONTDUMP); vma->vm_ops = &usbdev_vm_ops; vma->vm_private_data = usbm; diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 7e7e119c253f..a0e076c6f3a4 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -899,14 +899,14 @@ static int usb_device_match(struct device *dev, struct device_driver *drv) return 0; } -static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) +static int usb_uevent(const struct device *dev, struct kobj_uevent_env *env) { - struct usb_device *usb_dev; + const struct usb_device *usb_dev; if (is_usb_device(dev)) { usb_dev = to_usb_device(dev); } else if (is_usb_interface(dev)) { - struct usb_interface *intf = to_usb_interface(dev); + const struct usb_interface *intf = to_usb_interface(dev); usb_dev = interface_to_usbdev(intf); } else { diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 77e73fc8d673..97a0f8faea6e 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -44,6 +44,9 @@ #define USB_PRODUCT_USB5534B 0x5534 #define USB_VENDOR_CYPRESS 0x04b4 #define USB_PRODUCT_CY7C65632 0x6570 +#define USB_VENDOR_TEXAS_INSTRUMENTS 0x0451 +#define USB_PRODUCT_TUSB8041_USB3 0x8140 +#define USB_PRODUCT_TUSB8041_USB2 0x8142 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01 #define HUB_QUIRK_DISABLE_AUTOSUSPEND 0x02 @@ -2386,9 +2389,8 @@ static int usb_enumerate_device_otg(struct usb_device *udev) * usb_enumerate_device - Read device configs/intfs/otg (usbcore-internal) * @udev: newly addressed device (in ADDRESS state) * - * This is only called by usb_new_device() and usb_authorize_device() - * and FIXME -- all comments that apply to them apply here wrt to - * environment. + * This is only called by usb_new_device() -- all comments that apply there + * apply here wrt to environment. * * If the device is WUSB and not authorized, we don't attempt to read * the string descriptors, as they will be errored out by the device @@ -5854,6 +5856,16 @@ static const struct usb_device_id hub_id_table[] = { .idVendor = USB_VENDOR_GENESYS_LOGIC, .bInterfaceClass = USB_CLASS_HUB, .driver_info = HUB_QUIRK_CHECK_PORT_AUTOSUSPEND}, + { .match_flags = USB_DEVICE_ID_MATCH_VENDOR + | USB_DEVICE_ID_MATCH_PRODUCT, + .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS, + .idProduct = USB_PRODUCT_TUSB8041_USB2, + .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND}, + { .match_flags = USB_DEVICE_ID_MATCH_VENDOR + | USB_DEVICE_ID_MATCH_PRODUCT, + .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS, + .idProduct = USB_PRODUCT_TUSB8041_USB3, + .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND}, { .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS, .bDeviceClass = USB_CLASS_HUB}, { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 127fac1af676..cc404bb7e8f7 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1819,11 +1819,11 @@ void usb_authorize_interface(struct usb_interface *intf) } } -static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) +static int usb_if_uevent(const struct device *dev, struct kobj_uevent_env *env) { - struct usb_device *usb_dev; - struct usb_interface *intf; - struct usb_host_interface *alt; + const struct usb_device *usb_dev; + const struct usb_interface *intf; + const struct usb_host_interface *alt; intf = to_usb_interface(dev); usb_dev = interface_to_usbdev(intf); diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 079e183cf3bf..934b3d997702 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -526,6 +526,9 @@ static const struct usb_device_id usb_quirk_list[] = { /* DJI CineSSD */ { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM }, + /* Alcor Link AK9563 SC Reader used in 2022 Lenovo ThinkPads */ + { USB_DEVICE(0x2ce3, 0x9563), .driver_info = USB_QUIRK_NO_LPM }, + /* DELL USB GEN2 */ { USB_DEVICE(0x413c, 0xb062), .driver_info = USB_QUIRK_NO_LPM | USB_QUIRK_RESET_RESUME }, diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 8217032dfb85..b63f78e48c74 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -869,11 +869,7 @@ read_descriptors(struct file *filp, struct kobject *kobj, size_t srclen, n; int cfgno; void *src; - int retval; - retval = usb_lock_device_interruptible(udev); - if (retval < 0) - return -EINTR; /* The binary attribute begins with the device descriptor. * Following that are the raw descriptor entries for all the * configurations (config plus subsidiary descriptors). @@ -898,7 +894,6 @@ read_descriptors(struct file *filp, struct kobject *kobj, off -= srclen; } } - usb_unlock_device(udev); return count - nleft; } diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 6d93428432f1..533baa85083c 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -37,6 +37,71 @@ bool usb_acpi_power_manageable(struct usb_device *hdev, int index) } EXPORT_SYMBOL_GPL(usb_acpi_power_manageable); +#define UUID_USB_CONTROLLER_DSM "ce2ee385-00e6-48cb-9f05-2edb927c4899" +#define USB_DSM_DISABLE_U1_U2_FOR_PORT 5 + +/** + * usb_acpi_port_lpm_incapable - check if lpm should be disabled for a port. + * @hdev: USB device belonging to the usb hub + * @index: zero based port index + * + * Some USB3 ports may not support USB3 link power management U1/U2 states + * due to different retimer setup. ACPI provides _DSM method which returns 0x01 + * if U1 and U2 states should be disabled. Evaluate _DSM with: + * Arg0: UUID = ce2ee385-00e6-48cb-9f05-2edb927c4899 + * Arg1: Revision ID = 0 + * Arg2: Function Index = 5 + * Arg3: (empty) + * + * Return 1 if USB3 port is LPM incapable, negative on error, otherwise 0 + */ + +int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index) +{ + union acpi_object *obj; + acpi_handle port_handle; + int port1 = index + 1; + guid_t guid; + int ret; + + ret = guid_parse(UUID_USB_CONTROLLER_DSM, &guid); + if (ret) + return ret; + + port_handle = usb_get_hub_port_acpi_handle(hdev, port1); + if (!port_handle) { + dev_dbg(&hdev->dev, "port-%d no acpi handle\n", port1); + return -ENODEV; + } + + if (!acpi_check_dsm(port_handle, &guid, 0, + BIT(USB_DSM_DISABLE_U1_U2_FOR_PORT))) { + dev_dbg(&hdev->dev, "port-%d no _DSM function %d\n", + port1, USB_DSM_DISABLE_U1_U2_FOR_PORT); + return -ENODEV; + } + + obj = acpi_evaluate_dsm(port_handle, &guid, 0, + USB_DSM_DISABLE_U1_U2_FOR_PORT, NULL); + + if (!obj) + return -ENODEV; + + if (obj->type != ACPI_TYPE_INTEGER) { + dev_dbg(&hdev->dev, "evaluate port-%d _DSM failed\n", port1); + ACPI_FREE(obj); + return -EINVAL; + } + + if (obj->integer.value == 0x01) + ret = 1; + + ACPI_FREE(obj); + + return ret; +} +EXPORT_SYMBOL_GPL(usb_acpi_port_lpm_incapable); + /** * usb_acpi_set_power_state - control usb port's power via acpi power * resource diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 11b15d7b357a..34742fbbd84d 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -423,9 +423,9 @@ static void usb_release_dev(struct device *dev) kfree(udev); } -static int usb_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +static int usb_dev_uevent(const struct device *dev, struct kobj_uevent_env *env) { - struct usb_device *usb_dev; + const struct usb_device *usb_dev; usb_dev = to_usb_device(dev); @@ -505,10 +505,10 @@ static const struct dev_pm_ops usb_device_pm_ops = { #endif /* CONFIG_PM */ -static char *usb_devnode(struct device *dev, +static char *usb_devnode(const struct device *dev, umode_t *mode, kuid_t *uid, kgid_t *gid) { - struct usb_device *usb_dev; + const struct usb_device *usb_dev; usb_dev = to_usb_device(dev); return kasprintf(GFP_KERNEL, "bus/usb/%03d/%03d", @@ -998,7 +998,7 @@ static void usb_debugfs_init(void) static void usb_debugfs_cleanup(void) { - debugfs_remove(debugfs_lookup("devices", usb_debug_root)); + debugfs_lookup_and_remove("devices", usb_debug_root); } /* |