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-rw-r--r--drivers/usb/core/Kconfig27
-rw-r--r--drivers/usb/core/config.c3
-rw-r--r--drivers/usb/core/driver.c72
-rw-r--r--drivers/usb/core/endpoint.c2
-rw-r--r--drivers/usb/core/generic.c16
-rw-r--r--drivers/usb/core/hcd-pci.c3
-rw-r--r--drivers/usb/core/hcd.c43
-rw-r--r--drivers/usb/core/hub.c142
-rw-r--r--drivers/usb/core/hub.h5
-rw-r--r--drivers/usb/core/message.c7
-rw-r--r--drivers/usb/core/of.c71
-rw-r--r--drivers/usb/core/phy.c120
-rw-r--r--drivers/usb/core/phy.h3
-rw-r--r--drivers/usb/core/port.c81
-rw-r--r--drivers/usb/core/quirks.c7
-rw-r--r--drivers/usb/core/sysfs.c119
-rw-r--r--drivers/usb/core/usb-acpi.c46
-rw-r--r--drivers/usb/core/usb.c4
-rw-r--r--drivers/usb/core/usb.h16
19 files changed, 615 insertions, 172 deletions
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 351ede4b5de2..58e3ca7e4793 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -116,3 +116,30 @@ config USB_AUTOSUSPEND_DELAY
The default value Linux has always had is 2 seconds. Change
this value if you want a different delay and cannot modify
the command line or module parameter.
+
+config USB_DEFAULT_AUTHORIZATION_MODE
+ int "Default authorization mode for USB devices"
+ range 0 2
+ default 1
+ depends on USB
+ help
+ Select the default USB device authorization mode. Can be overridden
+ with usbcore.authorized_default command line or module parameter.
+
+ This option allows you to choose whether USB devices that are
+ connected to the system can be used by default, or if they are
+ locked down.
+
+ With value 0 all connected USB devices with the exception of root
+ hub require user space authorization before they can be used.
+
+ With value 1 (default) no user space authorization is required to
+ use connected USB devices.
+
+ With value 2 all connected USB devices with exception of internal
+ USB devices require user space authorization before they can be
+ used. Note that in this mode the differentiation between internal
+ and external USB devices relies on ACPI, and on systems without
+ ACPI selecting value 2 is analogous to selecting value 0.
+
+ If unsure, keep the default value.
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index b19e38d5fd10..7f8d33f92ddb 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -1047,7 +1047,7 @@ int usb_get_bos_descriptor(struct usb_device *dev)
if (cap->bDescriptorType != USB_DT_DEVICE_CAPABILITY) {
dev_notice(ddev, "descriptor type invalid, skip\n");
- continue;
+ goto skip_to_next_descriptor;
}
switch (cap_type) {
@@ -1078,6 +1078,7 @@ int usb_get_bos_descriptor(struct usb_device *dev)
break;
}
+skip_to_next_descriptor:
total_len -= length;
buffer += length;
}
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index f58a0299fb3b..e02ba15f6e34 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -189,13 +189,13 @@ static int usb_create_newid_files(struct usb_driver *usb_drv)
goto exit;
if (usb_drv->probe != NULL) {
- error = driver_create_file(&usb_drv->drvwrap.driver,
+ error = driver_create_file(&usb_drv->driver,
&driver_attr_new_id);
if (error == 0) {
- error = driver_create_file(&usb_drv->drvwrap.driver,
+ error = driver_create_file(&usb_drv->driver,
&driver_attr_remove_id);
if (error)
- driver_remove_file(&usb_drv->drvwrap.driver,
+ driver_remove_file(&usb_drv->driver,
&driver_attr_new_id);
}
}
@@ -209,9 +209,9 @@ static void usb_remove_newid_files(struct usb_driver *usb_drv)
return;
if (usb_drv->probe != NULL) {
- driver_remove_file(&usb_drv->drvwrap.driver,
+ driver_remove_file(&usb_drv->driver,
&driver_attr_remove_id);
- driver_remove_file(&usb_drv->drvwrap.driver,
+ driver_remove_file(&usb_drv->driver,
&driver_attr_new_id);
}
}
@@ -290,7 +290,10 @@ static int usb_probe_device(struct device *dev)
* specialised device drivers prior to setting the
* use_generic_driver bit.
*/
- error = udriver->probe(udev);
+ if (udriver->probe)
+ error = udriver->probe(udev);
+ else if (!udriver->generic_subclass)
+ error = -EINVAL;
if (error == -ENODEV && udriver != &usb_generic_driver &&
(udriver->id_table || udriver->match)) {
udev->use_generic_driver = 1;
@@ -549,7 +552,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
if (!iface->authorized)
return -ENODEV;
- dev->driver = &driver->drvwrap.driver;
+ dev->driver = &driver->driver;
usb_set_intfdata(iface, data);
iface->needs_binding = 0;
@@ -612,7 +615,7 @@ void usb_driver_release_interface(struct usb_driver *driver,
struct device *dev = &iface->dev;
/* this should never happen, don't release something that's not ours */
- if (!dev->driver || dev->driver != &driver->drvwrap.driver)
+ if (!dev->driver || dev->driver != &driver->driver)
return;
/* don't release from within disconnect() */
@@ -947,7 +950,7 @@ static int __usb_bus_reprobe_drivers(struct device *dev, void *data)
int ret;
/* Don't reprobe if current driver isn't usb_generic_driver */
- if (dev->driver != &usb_generic_driver.drvwrap.driver)
+ if (dev->driver != &usb_generic_driver.driver)
return 0;
udev = to_usb_device(dev);
@@ -961,6 +964,11 @@ static int __usb_bus_reprobe_drivers(struct device *dev, void *data)
return 0;
}
+bool is_usb_device_driver(const struct device_driver *drv)
+{
+ return drv->probe == usb_probe_device;
+}
+
/**
* usb_register_device_driver - register a USB device (not interface) driver
* @new_udriver: USB operations for the device driver
@@ -980,15 +988,14 @@ int usb_register_device_driver(struct usb_device_driver *new_udriver,
if (usb_disabled())
return -ENODEV;
- new_udriver->drvwrap.for_devices = 1;
- new_udriver->drvwrap.driver.name = new_udriver->name;
- new_udriver->drvwrap.driver.bus = &usb_bus_type;
- new_udriver->drvwrap.driver.probe = usb_probe_device;
- new_udriver->drvwrap.driver.remove = usb_unbind_device;
- new_udriver->drvwrap.driver.owner = owner;
- new_udriver->drvwrap.driver.dev_groups = new_udriver->dev_groups;
+ new_udriver->driver.name = new_udriver->name;
+ new_udriver->driver.bus = &usb_bus_type;
+ new_udriver->driver.probe = usb_probe_device;
+ new_udriver->driver.remove = usb_unbind_device;
+ new_udriver->driver.owner = owner;
+ new_udriver->driver.dev_groups = new_udriver->dev_groups;
- retval = driver_register(&new_udriver->drvwrap.driver);
+ retval = driver_register(&new_udriver->driver);
if (!retval) {
pr_info("%s: registered new device driver %s\n",
@@ -1020,7 +1027,7 @@ void usb_deregister_device_driver(struct usb_device_driver *udriver)
pr_info("%s: deregistering device driver %s\n",
usbcore_name, udriver->name);
- driver_unregister(&udriver->drvwrap.driver);
+ driver_unregister(&udriver->driver);
}
EXPORT_SYMBOL_GPL(usb_deregister_device_driver);
@@ -1048,18 +1055,17 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner,
if (usb_disabled())
return -ENODEV;
- new_driver->drvwrap.for_devices = 0;
- new_driver->drvwrap.driver.name = new_driver->name;
- new_driver->drvwrap.driver.bus = &usb_bus_type;
- new_driver->drvwrap.driver.probe = usb_probe_interface;
- new_driver->drvwrap.driver.remove = usb_unbind_interface;
- new_driver->drvwrap.driver.owner = owner;
- new_driver->drvwrap.driver.mod_name = mod_name;
- new_driver->drvwrap.driver.dev_groups = new_driver->dev_groups;
+ new_driver->driver.name = new_driver->name;
+ new_driver->driver.bus = &usb_bus_type;
+ new_driver->driver.probe = usb_probe_interface;
+ new_driver->driver.remove = usb_unbind_interface;
+ new_driver->driver.owner = owner;
+ new_driver->driver.mod_name = mod_name;
+ new_driver->driver.dev_groups = new_driver->dev_groups;
spin_lock_init(&new_driver->dynids.lock);
INIT_LIST_HEAD(&new_driver->dynids.list);
- retval = driver_register(&new_driver->drvwrap.driver);
+ retval = driver_register(&new_driver->driver);
if (retval)
goto out;
@@ -1074,7 +1080,7 @@ out:
return retval;
out_newid:
- driver_unregister(&new_driver->drvwrap.driver);
+ driver_unregister(&new_driver->driver);
pr_err("%s: error %d registering interface driver %s\n",
usbcore_name, retval, new_driver->name);
@@ -1099,7 +1105,7 @@ void usb_deregister(struct usb_driver *driver)
usbcore_name, driver->name);
usb_remove_newid_files(driver);
- driver_unregister(&driver->drvwrap.driver);
+ driver_unregister(&driver->driver);
usb_free_dynids(driver);
}
EXPORT_SYMBOL_GPL(usb_deregister);
@@ -1704,9 +1710,7 @@ int usb_autoresume_device(struct usb_device *udev)
{
int status;
- status = pm_runtime_get_sync(&udev->dev);
- if (status < 0)
- pm_runtime_put_sync(&udev->dev);
+ status = pm_runtime_resume_and_get(&udev->dev);
dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
__func__, atomic_read(&udev->dev.power.usage_count),
status);
@@ -1812,9 +1816,7 @@ int usb_autopm_get_interface(struct usb_interface *intf)
{
int status;
- status = pm_runtime_get_sync(&intf->dev);
- if (status < 0)
- pm_runtime_put_sync(&intf->dev);
+ status = pm_runtime_resume_and_get(&intf->dev);
dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
__func__, atomic_read(&intf->dev.power.usage_count),
status);
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index a2530811cf7d..4b38b87a1343 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -141,7 +141,7 @@ static void ep_device_release(struct device *dev)
kfree(ep_dev);
}
-struct device_type usb_ep_device_type = {
+const struct device_type usb_ep_device_type = {
.name = "usb_endpoint",
.release = ep_device_release,
};
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index 740342a2812a..b134bff5c3fe 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -59,10 +59,26 @@ int usb_choose_configuration(struct usb_device *udev)
int num_configs;
int insufficient_power = 0;
struct usb_host_config *c, *best;
+ struct usb_device_driver *udriver;
+
+ /*
+ * If a USB device (not an interface) doesn't have a driver then the
+ * kernel has no business trying to select or install a configuration
+ * for it.
+ */
+ if (!udev->dev.driver)
+ return -1;
+ udriver = to_usb_device_driver(udev->dev.driver);
if (usb_device_is_owned(udev))
return 0;
+ if (udriver->choose_configuration) {
+ i = udriver->choose_configuration(udev);
+ if (i >= 0)
+ return i;
+ }
+
best = NULL;
c = udev->config;
num_configs = udev->descriptor.bNumConfigurations;
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 990280688b25..ee3156f49533 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -206,8 +206,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct hc_driver *driver)
goto free_irq_vectors;
}
- hcd->amd_resume_bug = (usb_hcd_amd_remote_wakeup_quirk(dev) &&
- driver->flags & (HCD_USB11 | HCD_USB3)) ? 1 : 0;
+ hcd->amd_resume_bug = usb_hcd_amd_resume_bug(dev, driver);
if (driver->flags & HCD_MEMORY) {
/* EHCI, OHCI */
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 12b6dfeaf658..c0e005670d67 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -357,12 +357,10 @@ static const u8 ss_rh_config_descriptor[] = {
#define USB_AUTHORIZE_ALL 1
#define USB_AUTHORIZE_INTERNAL 2
-static int authorized_default = USB_AUTHORIZE_WIRED;
+static int authorized_default = CONFIG_USB_DEFAULT_AUTHORIZATION_MODE;
module_param(authorized_default, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(authorized_default,
- "Default USB device authorization: 0 is not authorized, 1 is "
- "authorized, 2 is authorized for internal devices, -1 is "
- "authorized (default, same as 1)");
+ "Default USB device authorization: 0 is not authorized, 1 is authorized (default), 2 is authorized for internal devices, -1 is authorized (same as 1)");
/*-------------------------------------------------------------------------*/
/**
@@ -1664,9 +1662,10 @@ static void __usb_hcd_giveback_urb(struct urb *urb)
usb_put_urb(urb);
}
-static void usb_giveback_urb_bh(struct tasklet_struct *t)
+static void usb_giveback_urb_bh(struct work_struct *work)
{
- struct giveback_urb_bh *bh = from_tasklet(bh, t, bh);
+ struct giveback_urb_bh *bh =
+ container_of(work, struct giveback_urb_bh, bh);
struct list_head local_list;
spin_lock_irq(&bh->lock);
@@ -1691,9 +1690,9 @@ static void usb_giveback_urb_bh(struct tasklet_struct *t)
spin_lock_irq(&bh->lock);
if (!list_empty(&bh->head)) {
if (bh->high_prio)
- tasklet_hi_schedule(&bh->bh);
+ queue_work(system_bh_highpri_wq, &bh->bh);
else
- tasklet_schedule(&bh->bh);
+ queue_work(system_bh_wq, &bh->bh);
}
bh->running = false;
spin_unlock_irq(&bh->lock);
@@ -1706,7 +1705,7 @@ static void usb_giveback_urb_bh(struct tasklet_struct *t)
* @status: completion status code for the URB.
*
* Context: atomic. The completion callback is invoked in caller's context.
- * For HCDs with HCD_BH flag set, the completion callback is invoked in tasklet
+ * For HCDs with HCD_BH flag set, the completion callback is invoked in BH
* context (except for URBs submitted to the root hub which always complete in
* caller's context).
*
@@ -1725,7 +1724,7 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)
struct giveback_urb_bh *bh;
bool running;
- /* pass status to tasklet via unlinked */
+ /* pass status to BH via unlinked */
if (likely(!urb->unlinked))
urb->unlinked = status;
@@ -1747,9 +1746,9 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)
if (running)
;
else if (bh->high_prio)
- tasklet_hi_schedule(&bh->bh);
+ queue_work(system_bh_highpri_wq, &bh->bh);
else
- tasklet_schedule(&bh->bh);
+ queue_work(system_bh_wq, &bh->bh);
}
EXPORT_SYMBOL_GPL(usb_hcd_giveback_urb);
@@ -2540,7 +2539,7 @@ static void init_giveback_urb_bh(struct giveback_urb_bh *bh)
spin_lock_init(&bh->lock);
INIT_LIST_HEAD(&bh->head);
- tasklet_setup(&bh->bh, usb_giveback_urb_bh);
+ INIT_WORK(&bh->bh, usb_giveback_urb_bh);
}
struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
@@ -2794,10 +2793,16 @@ int usb_add_hcd(struct usb_hcd *hcd,
struct usb_device *rhdev;
struct usb_hcd *shared_hcd;
- if (!hcd->skip_phy_initialization && usb_hcd_is_primary_hcd(hcd)) {
- hcd->phy_roothub = usb_phy_roothub_alloc(hcd->self.sysdev);
- if (IS_ERR(hcd->phy_roothub))
- return PTR_ERR(hcd->phy_roothub);
+ if (!hcd->skip_phy_initialization) {
+ if (usb_hcd_is_primary_hcd(hcd)) {
+ hcd->phy_roothub = usb_phy_roothub_alloc(hcd->self.sysdev);
+ if (IS_ERR(hcd->phy_roothub))
+ return PTR_ERR(hcd->phy_roothub);
+ } else {
+ hcd->phy_roothub = usb_phy_roothub_alloc_usb3_phy(hcd->self.sysdev);
+ if (IS_ERR(hcd->phy_roothub))
+ return PTR_ERR(hcd->phy_roothub);
+ }
retval = usb_phy_roothub_init(hcd->phy_roothub);
if (retval)
@@ -2926,7 +2931,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
&& device_can_wakeup(&hcd->self.root_hub->dev))
dev_dbg(hcd->self.controller, "supports USB remote wakeup\n");
- /* initialize tasklets */
+ /* initialize BHs */
init_giveback_urb_bh(&hcd->high_prio_bh);
hcd->high_prio_bh.high_prio = true;
init_giveback_urb_bh(&hcd->low_prio_bh);
@@ -3036,7 +3041,7 @@ void usb_remove_hcd(struct usb_hcd *hcd)
mutex_unlock(&usb_bus_idr_lock);
/*
- * tasklet_kill() isn't needed here because:
+ * flush_work() isn't needed here because:
* - driver's disconnect() called from usb_disconnect() should
* make sure its URBs are completed during the disconnect()
* callback
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 0ff47eeffb49..008053039875 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -37,6 +37,7 @@
#include <asm/byteorder.h>
#include "hub.h"
+#include "phy.h"
#include "otg_productlist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
@@ -47,12 +48,24 @@
#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
+#define USB_VENDOR_MICROCHIP 0x0424
+#define USB_PRODUCT_USB4913 0x4913
+#define USB_PRODUCT_USB4914 0x4914
+#define USB_PRODUCT_USB4915 0x4915
+#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND BIT(0)
+#define HUB_QUIRK_DISABLE_AUTOSUSPEND BIT(1)
+#define HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL BIT(2)
#define USB_TP_TRANSMISSION_DELAY 40 /* ns */
#define USB_TP_TRANSMISSION_DELAY_MAX 65535 /* ns */
#define USB_PING_RESPONSE_TIME 400 /* ns */
+#define USB_REDUCE_FRAME_INTR_BINTERVAL 9
+
+/*
+ * The SET_ADDRESS request timeout will be 500 ms when
+ * USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT quirk flag is set.
+ */
+#define USB_SHORT_SET_ADDRESS_REQ_TIMEOUT 500 /* ms */
/* Protect struct usb_device->state and ->children members
* Note: Both are also protected by ->dev.sem, except that ->state can
@@ -117,7 +130,6 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
#define HUB_DEBOUNCE_STEP 25
#define HUB_DEBOUNCE_STABLE 100
-static void hub_release(struct kref *kref);
static int usb_reset_and_verify_device(struct usb_device *udev);
static int hub_port_disable(struct usb_hub *hub, int port1, int set_state);
static bool hub_port_warm_reset_required(struct usb_hub *hub, int port1,
@@ -632,16 +644,21 @@ static int hub_ext_port_status(struct usb_hub *hub, int port1, int type,
struct usb_device *hdev = hub->hdev;
/*
- * Only roothub will be notified of port state changes,
+ * Only roothub will be notified of connection changes,
* since the USB PHY only cares about changes at the next
* level.
*/
if (is_root_hub(hdev)) {
struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
-
- if (hcd->usb_phy)
- usb_phy_notify_port_status(hcd->usb_phy,
- port1 - 1, *status, *change);
+ bool connect;
+ bool connect_change;
+
+ connect_change = *change & USB_PORT_STAT_C_CONNECTION;
+ connect = *status & USB_PORT_STAT_CONNECTION;
+ if (connect_change && connect)
+ usb_phy_roothub_notify_connect(hcd->phy_roothub, port1 - 1);
+ else if (connect_change)
+ usb_phy_roothub_notify_disconnect(hcd->phy_roothub, port1 - 1);
}
}
@@ -702,14 +719,14 @@ static void kick_hub_wq(struct usb_hub *hub)
*/
intf = to_usb_interface(hub->intfdev);
usb_autopm_get_interface_no_resume(intf);
- kref_get(&hub->kref);
+ hub_get(hub);
if (queue_work(hub_wq, &hub->events))
return;
/* the work has already been scheduled */
usb_autopm_put_interface_async(intf);
- kref_put(&hub->kref, hub_release);
+ hub_put(hub);
}
void usb_kick_hub_wq(struct usb_device *hdev)
@@ -1077,7 +1094,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
goto init2;
goto init3;
}
- kref_get(&hub->kref);
+ hub_get(hub);
/* The superspeed hub except for root hub has to use Hub Depth
* value as an offset into the route string to locate the bits
@@ -1325,7 +1342,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
device_unlock(&hdev->dev);
}
- kref_put(&hub->kref, hub_release);
+ hub_put(hub);
}
/* Implement the continuations for the delays above */
@@ -1741,6 +1758,16 @@ static void hub_release(struct kref *kref)
kfree(hub);
}
+void hub_get(struct usb_hub *hub)
+{
+ kref_get(&hub->kref);
+}
+
+void hub_put(struct usb_hub *hub)
+{
+ kref_put(&hub->kref, hub_release);
+}
+
static unsigned highspeed_hubs;
static void hub_disconnect(struct usb_interface *intf)
@@ -1789,7 +1816,7 @@ static void hub_disconnect(struct usb_interface *intf)
onboard_hub_destroy_pdevs(&hub->onboard_hub_devs);
- kref_put(&hub->kref, hub_release);
+ hub_put(hub);
}
static bool hub_descriptor_is_sane(struct usb_host_interface *desc)
@@ -1927,6 +1954,14 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
usb_autopm_get_interface_no_resume(intf);
}
+ if ((id->driver_info & HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL) &&
+ desc->endpoint[0].desc.bInterval > USB_REDUCE_FRAME_INTR_BINTERVAL) {
+ desc->endpoint[0].desc.bInterval =
+ USB_REDUCE_FRAME_INTR_BINTERVAL;
+ /* Tell the HCD about the interrupt ep's new bInterval */
+ usb_set_interface(hdev, 0, 0);
+ }
+
if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) {
onboard_hub_create_pdevs(hdev, &hub->onboard_hub_devs);
@@ -2056,9 +2091,19 @@ static void update_port_device_state(struct usb_device *udev)
if (udev->parent) {
hub = usb_hub_to_struct_hub(udev->parent);
- port_dev = hub->ports[udev->portnum - 1];
- WRITE_ONCE(port_dev->state, udev->state);
- sysfs_notify_dirent(port_dev->state_kn);
+
+ /*
+ * The Link Layer Validation System Driver (lvstest)
+ * has a test step to unbind the hub before running the
+ * rest of the procedure. This triggers hub_disconnect
+ * which will set the hub's maxchild to 0, further
+ * resulting in usb_hub_to_struct_hub returning NULL.
+ */
+ if (hub) {
+ port_dev = hub->ports[udev->portnum - 1];
+ WRITE_ONCE(port_dev->state, udev->state);
+ sysfs_notify_dirent(port_dev->state_kn);
+ }
}
}
@@ -2274,6 +2319,8 @@ void usb_disconnect(struct usb_device **pdev)
*/
if (!test_and_set_bit(port1, hub->child_usage_bits))
pm_runtime_get_sync(&port_dev->dev);
+
+ typec_deattach(port_dev->connector, &udev->dev);
}
usb_remove_ep_devs(&udev->ep0);
@@ -2389,17 +2436,25 @@ static int usb_enumerate_device_otg(struct usb_device *udev)
}
} else if (desc->bLength == sizeof
(struct usb_otg_descriptor)) {
- /* Set a_alt_hnp_support for legacy otg device */
- err = usb_control_msg(udev,
- usb_sndctrlpipe(udev, 0),
- USB_REQ_SET_FEATURE, 0,
- USB_DEVICE_A_ALT_HNP_SUPPORT,
- 0, NULL, 0,
- USB_CTRL_SET_TIMEOUT);
- if (err < 0)
- dev_err(&udev->dev,
- "set a_alt_hnp_support failed: %d\n",
- err);
+ /*
+ * We are operating on a legacy OTP device
+ * These should be told that they are operating
+ * on the wrong port if we have another port that does
+ * support HNP
+ */
+ if (bus->otg_port != 0) {
+ /* Set a_alt_hnp_support for legacy otg device */
+ err = usb_control_msg(udev,
+ usb_sndctrlpipe(udev, 0),
+ USB_REQ_SET_FEATURE, 0,
+ USB_DEVICE_A_ALT_HNP_SUPPORT,
+ 0, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+ if (err < 0)
+ dev_err(&udev->dev,
+ "set a_alt_hnp_support failed: %d\n",
+ err);
+ }
}
}
#endif
@@ -2620,6 +2675,8 @@ int usb_new_device(struct usb_device *udev)
if (!test_and_set_bit(port1, hub->child_usage_bits))
pm_runtime_get_sync(&port_dev->dev);
+
+ typec_attach(port_dev->connector, &udev->dev);
}
(void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev);
@@ -4645,7 +4702,12 @@ EXPORT_SYMBOL_GPL(usb_ep0_reinit);
static int hub_set_address(struct usb_device *udev, int devnum)
{
int retval;
+ unsigned int timeout_ms = USB_CTRL_SET_TIMEOUT;
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+ struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent);
+
+ if (hub->hdev->quirks & USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT)
+ timeout_ms = USB_SHORT_SET_ADDRESS_REQ_TIMEOUT;
/*
* The host controller will choose the device address,
@@ -4658,11 +4720,11 @@ static int hub_set_address(struct usb_device *udev, int devnum)
if (udev->state != USB_STATE_DEFAULT)
return -EINVAL;
if (hcd->driver->address_device)
- retval = hcd->driver->address_device(hcd, udev);
+ retval = hcd->driver->address_device(hcd, udev, timeout_ms);
else
retval = usb_control_msg(udev, usb_sndaddr0pipe(),
USB_REQ_SET_ADDRESS, 0, devnum, 0,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
+ NULL, 0, timeout_ms);
if (retval == 0) {
update_devnum(udev, devnum);
/* Device now using proper address. */
@@ -5048,9 +5110,10 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
}
if (usb_endpoint_maxp(&udev->ep0.desc) == i) {
; /* Initial ep0 maxpacket guess is right */
- } else if ((udev->speed == USB_SPEED_FULL ||
+ } else if (((udev->speed == USB_SPEED_FULL ||
udev->speed == USB_SPEED_HIGH) &&
- (i == 8 || i == 16 || i == 32 || i == 64)) {
+ (i == 8 || i == 16 || i == 32 || i == 64)) ||
+ (udev->speed >= USB_SPEED_SUPER && i > 0)) {
/* Initial guess is wrong; use the descriptor's value */
if (udev->speed == USB_SPEED_FULL)
dev_dbg(&udev->dev, "ep0 maxpacket = %d\n", i);
@@ -5881,7 +5944,7 @@ out_hdev_lock:
/* Balance the stuff in kick_hub_wq() and allow autosuspend */
usb_autopm_put_interface(intf);
- kref_put(&hub->kref, hub_release);
+ hub_put(hub);
kcov_remote_stop();
}
@@ -5914,6 +5977,21 @@ static const struct usb_device_id hub_id_table[] = {
.idVendor = USB_VENDOR_TEXAS_INSTRUMENTS,
.idProduct = USB_PRODUCT_TUSB8041_USB3,
.driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_MICROCHIP,
+ .idProduct = USB_PRODUCT_USB4913,
+ .driver_info = HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_MICROCHIP,
+ .idProduct = USB_PRODUCT_USB4914,
+ .driver_info = HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_MICROCHIP,
+ .idProduct = USB_PRODUCT_USB4915,
+ .driver_info = HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL},
{ .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/hub.h b/drivers/usb/core/hub.h
index d44dd7f6623e..183b69dc2955 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -14,6 +14,7 @@
#include <linux/usb.h>
#include <linux/usb/ch11.h>
#include <linux/usb/hcd.h>
+#include <linux/usb/typec.h>
#include "usb.h"
struct usb_hub {
@@ -82,6 +83,7 @@ struct usb_hub {
* @dev: generic device interface
* @port_owner: port's owner
* @peer: related usb2 and usb3 ports (share the same connector)
+ * @connector: USB Type-C connector
* @req: default pm qos request for hubs without port power control
* @connect_type: port's connect type
* @state: device state of the usb device attached to the port
@@ -100,6 +102,7 @@ struct usb_port {
struct device dev;
struct usb_dev_state *port_owner;
struct usb_port *peer;
+ struct typec_connector *connector;
struct dev_pm_qos_request *req;
enum usb_port_connect_type connect_type;
enum usb_device_state state;
@@ -126,6 +129,8 @@ extern void usb_hub_remove_port_device(struct usb_hub *hub,
extern int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub,
int port1, bool set);
extern struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev);
+extern void hub_get(struct usb_hub *hub);
+extern void hub_put(struct usb_hub *hub);
extern int hub_port_debounce(struct usb_hub *hub, int port1,
bool must_be_connected);
extern int usb_clear_port_feature(struct usb_device *hdev,
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 077dfe48d01c..d2b2787be409 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1198,6 +1198,8 @@ EXPORT_SYMBOL_GPL(usb_get_status);
* same status code used to report a true stall.
*
* This call is synchronous, and may not be used in an interrupt context.
+ * If a thread in your driver uses this call, make sure your disconnect()
+ * method can wait for it to complete.
*
* Return: Zero on success, or else the status code returned by the
* underlying usb_control_msg() call.
@@ -1516,7 +1518,8 @@ void usb_enable_interface(struct usb_device *dev,
* This call is synchronous, and may not be used in an interrupt context.
* Also, drivers must not change altsettings while urbs are scheduled for
* endpoints in that interface; all such urbs must first be completed
- * (perhaps forced by unlinking).
+ * (perhaps forced by unlinking). If a thread in your driver uses this call,
+ * make sure your disconnect() method can wait for it to complete.
*
* Return: Zero on success, or else the status code returned by the
* underlying usb_control_msg() call.
@@ -1849,7 +1852,7 @@ static int usb_if_uevent(const struct device *dev, struct kobj_uevent_env *env)
return 0;
}
-struct device_type usb_if_device_type = {
+const struct device_type usb_if_device_type = {
.name = "usb_interface",
.release = usb_release_interface,
.uevent = usb_if_uevent,
diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index db4ccf9ce3d9..f1a499ee482c 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -8,6 +8,7 @@
*/
#include <linux/of.h>
+#include <linux/of_graph.h>
#include <linux/usb/of.h>
/**
@@ -75,6 +76,76 @@ bool usb_of_has_combined_node(struct usb_device *udev)
}
EXPORT_SYMBOL_GPL(usb_of_has_combined_node);
+static bool usb_of_has_devices_or_graph(const struct usb_device *hub)
+{
+ const struct device_node *np = hub->dev.of_node;
+ struct device_node *child;
+
+ if (of_graph_is_present(np))
+ return true;
+
+ for_each_child_of_node(np, child)
+ if (of_property_present(child, "reg"))
+ return true;
+
+ return false;
+}
+
+/**
+ * usb_of_get_connect_type() - get a USB hub's port connect_type
+ * @hub: hub to which port is for @port1
+ * @port1: one-based index of port
+ *
+ * Get the connect_type of @port1 based on the device node for @hub. If the
+ * port is described in the OF graph, the connect_type is "hotplug". If the
+ * @hub has a child device has with a 'reg' property equal to @port1 the
+ * connect_type is "hard-wired". If there isn't an OF graph or child node at
+ * all then the connect_type is "unknown". Otherwise, the port is considered
+ * "unused" because it isn't described at all.
+ *
+ * Return: A connect_type for @port1 based on the device node for @hub.
+ */
+enum usb_port_connect_type usb_of_get_connect_type(struct usb_device *hub, int port1)
+{
+ struct device_node *np, *child, *ep, *remote_np;
+ enum usb_port_connect_type connect_type;
+
+ /* Only set connect_type if binding has ports/hardwired devices. */
+ if (!usb_of_has_devices_or_graph(hub))
+ return USB_PORT_CONNECT_TYPE_UNKNOWN;
+
+ /* Assume port is unused if there's a graph or a child node. */
+ connect_type = USB_PORT_NOT_USED;
+
+ np = hub->dev.of_node;
+ /*
+ * Hotplug ports are connected to an available remote node, e.g.
+ * usb-a-connector compatible node, in the OF graph.
+ */
+ if (of_graph_is_present(np)) {
+ ep = of_graph_get_endpoint_by_regs(np, port1, -1);
+ if (ep) {
+ remote_np = of_graph_get_remote_port_parent(ep);
+ of_node_put(ep);
+ if (of_device_is_available(remote_np))
+ connect_type = USB_PORT_CONNECT_TYPE_HOT_PLUG;
+ of_node_put(remote_np);
+ }
+ }
+
+ /*
+ * Hard-wired ports are child nodes with a reg property corresponding
+ * to the port number, i.e. a usb device.
+ */
+ child = usb_of_get_device_node(hub, port1);
+ if (of_device_is_available(child))
+ connect_type = USB_PORT_CONNECT_TYPE_HARD_WIRED;
+ of_node_put(child);
+
+ return connect_type;
+}
+EXPORT_SYMBOL_GPL(usb_of_get_connect_type);
+
/**
* usb_of_get_interface_node() - get a USB interface node
* @udev: USB device of interface
diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c
index fb1588e7c282..faa20054ad5a 100644
--- a/drivers/usb/core/phy.c
+++ b/drivers/usb/core/phy.c
@@ -19,6 +19,30 @@ struct usb_phy_roothub {
struct list_head list;
};
+/* Allocate the roothub_entry by specific name of phy */
+static int usb_phy_roothub_add_phy_by_name(struct device *dev, const char *name,
+ struct list_head *list)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct phy *phy;
+
+ phy = devm_of_phy_get(dev, dev->of_node, name);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ roothub_entry = devm_kzalloc(dev, sizeof(*roothub_entry), GFP_KERNEL);
+ if (!roothub_entry)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&roothub_entry->list);
+
+ roothub_entry->phy = phy;
+
+ list_add_tail(&roothub_entry->list, list);
+
+ return 0;
+}
+
static int usb_phy_roothub_add_phy(struct device *dev, int index,
struct list_head *list)
{
@@ -65,6 +89,9 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)
INIT_LIST_HEAD(&phy_roothub->list);
+ if (!usb_phy_roothub_add_phy_by_name(dev, "usb2-phy", &phy_roothub->list))
+ return phy_roothub;
+
for (i = 0; i < num_phys; i++) {
err = usb_phy_roothub_add_phy(dev, i, &phy_roothub->list);
if (err)
@@ -75,6 +102,41 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)
}
EXPORT_SYMBOL_GPL(usb_phy_roothub_alloc);
+/**
+ * usb_phy_roothub_alloc_usb3_phy - alloc the roothub
+ * @dev: the device of the host controller
+ *
+ * Allocate the usb phy roothub if the host use a generic usb3-phy.
+ *
+ * Return: On success, a pointer to the usb_phy_roothub. Otherwise,
+ * %NULL if no use usb3 phy or %-ENOMEM if out of memory.
+ */
+struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(struct device *dev)
+{
+ struct usb_phy_roothub *phy_roothub;
+ int num_phys;
+
+ if (!IS_ENABLED(CONFIG_GENERIC_PHY))
+ return NULL;
+
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ if (num_phys <= 0)
+ return NULL;
+
+ phy_roothub = devm_kzalloc(dev, sizeof(*phy_roothub), GFP_KERNEL);
+ if (!phy_roothub)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_LIST_HEAD(&phy_roothub->list);
+
+ if (!usb_phy_roothub_add_phy_by_name(dev, "usb3-phy", &phy_roothub->list))
+ return phy_roothub;
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_alloc_usb3_phy);
+
int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub)
{
struct usb_phy_roothub *roothub_entry;
@@ -172,6 +234,64 @@ int usb_phy_roothub_calibrate(struct usb_phy_roothub *phy_roothub)
}
EXPORT_SYMBOL_GPL(usb_phy_roothub_calibrate);
+/**
+ * usb_phy_roothub_notify_connect() - connect notification
+ * @phy_roothub: the phy of roothub, if the host use a generic phy.
+ * @port: the port index for connect
+ *
+ * If the phy needs to get connection status, the callback can be used.
+ * Returns: %0 if successful, a negative error code otherwise
+ */
+int usb_phy_roothub_notify_connect(struct usb_phy_roothub *phy_roothub, int port)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct list_head *head;
+ int err;
+
+ if (!phy_roothub)
+ return 0;
+
+ head = &phy_roothub->list;
+
+ list_for_each_entry(roothub_entry, head, list) {
+ err = phy_notify_connect(roothub_entry->phy, port);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_notify_connect);
+
+/**
+ * usb_phy_roothub_notify_disconnect() - disconnect notification
+ * @phy_roothub: the phy of roothub, if the host use a generic phy.
+ * @port: the port index for disconnect
+ *
+ * If the phy needs to get connection status, the callback can be used.
+ * Returns: %0 if successful, a negative error code otherwise
+ */
+int usb_phy_roothub_notify_disconnect(struct usb_phy_roothub *phy_roothub, int port)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct list_head *head;
+ int err;
+
+ if (!phy_roothub)
+ return 0;
+
+ head = &phy_roothub->list;
+
+ list_for_each_entry(roothub_entry, head, list) {
+ err = phy_notify_disconnect(roothub_entry->phy, port);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_notify_disconnect);
+
int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub)
{
struct usb_phy_roothub *roothub_entry;
diff --git a/drivers/usb/core/phy.h b/drivers/usb/core/phy.h
index 20a267cd986b..88b49c0ea6b5 100644
--- a/drivers/usb/core/phy.h
+++ b/drivers/usb/core/phy.h
@@ -12,6 +12,7 @@ struct device;
struct usb_phy_roothub;
struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev);
+struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(struct device *dev);
int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
@@ -19,6 +20,8 @@ int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub,
enum phy_mode mode);
int usb_phy_roothub_calibrate(struct usb_phy_roothub *phy_roothub);
+int usb_phy_roothub_notify_connect(struct usb_phy_roothub *phy_roothub, int port);
+int usb_phy_roothub_notify_disconnect(struct usb_phy_roothub *phy_roothub, int port);
int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub);
void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub);
diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c
index 77be0dc28da9..e7da2fca11a4 100644
--- a/drivers/usb/core/port.c
+++ b/drivers/usb/core/port.c
@@ -11,6 +11,7 @@
#include <linux/slab.h>
#include <linux/pm_qos.h>
#include <linux/component.h>
+#include <linux/usb/of.h>
#include "hub.h"
@@ -50,16 +51,29 @@ static ssize_t disable_show(struct device *dev,
struct usb_port *port_dev = to_usb_port(dev);
struct usb_device *hdev = to_usb_device(dev->parent->parent);
struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
- struct usb_interface *intf = to_usb_interface(hub->intfdev);
+ struct usb_interface *intf = to_usb_interface(dev->parent);
int port1 = port_dev->portnum;
u16 portstatus, unused;
bool disabled;
int rc;
+ struct kernfs_node *kn;
+ if (!hub)
+ return -ENODEV;
+ hub_get(hub);
rc = usb_autopm_get_interface(intf);
if (rc < 0)
- return rc;
+ goto out_hub_get;
+ /*
+ * Prevent deadlock if another process is concurrently
+ * trying to unregister hdev.
+ */
+ kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
+ if (!kn) {
+ rc = -ENODEV;
+ goto out_autopm;
+ }
usb_lock_device(hdev);
if (hub->disconnected) {
rc = -ENODEV;
@@ -69,9 +83,13 @@ static ssize_t disable_show(struct device *dev,
usb_hub_port_status(hub, port1, &portstatus, &unused);
disabled = !usb_port_is_power_on(hub, portstatus);
-out_hdev_lock:
+ out_hdev_lock:
usb_unlock_device(hdev);
+ sysfs_unbreak_active_protection(kn);
+ out_autopm:
usb_autopm_put_interface(intf);
+ out_hub_get:
+ hub_put(hub);
if (rc)
return rc;
@@ -85,19 +103,32 @@ static ssize_t disable_store(struct device *dev, struct device_attribute *attr,
struct usb_port *port_dev = to_usb_port(dev);
struct usb_device *hdev = to_usb_device(dev->parent->parent);
struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
- struct usb_interface *intf = to_usb_interface(hub->intfdev);
+ struct usb_interface *intf = to_usb_interface(dev->parent);
int port1 = port_dev->portnum;
bool disabled;
int rc;
+ struct kernfs_node *kn;
+ if (!hub)
+ return -ENODEV;
rc = kstrtobool(buf, &disabled);
if (rc)
return rc;
+ hub_get(hub);
rc = usb_autopm_get_interface(intf);
if (rc < 0)
- return rc;
+ goto out_hub_get;
+ /*
+ * Prevent deadlock if another process is concurrently
+ * trying to unregister hdev.
+ */
+ kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
+ if (!kn) {
+ rc = -ENODEV;
+ goto out_autopm;
+ }
usb_lock_device(hdev);
if (hub->disconnected) {
rc = -ENODEV;
@@ -118,9 +149,13 @@ static ssize_t disable_store(struct device *dev, struct device_attribute *attr,
if (!rc)
rc = count;
-out_hdev_lock:
+ out_hdev_lock:
usb_unlock_device(hdev);
+ sysfs_unbreak_active_protection(kn);
+ out_autopm:
usb_autopm_put_interface(intf);
+ out_hub_get:
+ hub_put(hub);
return rc;
}
@@ -418,8 +453,10 @@ static void usb_port_shutdown(struct device *dev)
{
struct usb_port *port_dev = to_usb_port(dev);
- if (port_dev->child)
+ if (port_dev->child) {
usb_disable_usb2_hardware_lpm(port_dev->child);
+ usb_unlocked_disable_lpm(port_dev->child);
+ }
}
static const struct dev_pm_ops usb_port_pm_ops = {
@@ -429,7 +466,7 @@ static const struct dev_pm_ops usb_port_pm_ops = {
#endif
};
-struct device_type usb_port_device_type = {
+const struct device_type usb_port_device_type = {
.name = "usb_port",
.release = usb_port_device_release,
.pm = &usb_port_pm_ops,
@@ -573,7 +610,7 @@ static int match_location(struct usb_device *peer_hdev, void *p)
struct usb_hub *peer_hub = usb_hub_to_struct_hub(peer_hdev);
struct usb_device *hdev = to_usb_device(port_dev->dev.parent->parent);
- if (!peer_hub)
+ if (!peer_hub || port_dev->connect_type == USB_PORT_NOT_USED)
return 0;
hcd = bus_to_hcd(hdev->bus);
@@ -584,7 +621,8 @@ static int match_location(struct usb_device *peer_hdev, void *p)
for (port1 = 1; port1 <= peer_hdev->maxchild; port1++) {
peer = peer_hub->ports[port1 - 1];
- if (peer && peer->location == port_dev->location) {
+ if (peer && peer->connect_type != USB_PORT_NOT_USED &&
+ peer->location == port_dev->location) {
link_peers_report(port_dev, peer);
return 1; /* done */
}
@@ -653,6 +691,7 @@ static void find_and_link_peer(struct usb_hub *hub, int port1)
static int connector_bind(struct device *dev, struct device *connector, void *data)
{
+ struct usb_port *port_dev = to_usb_port(dev);
int ret;
ret = sysfs_create_link(&dev->kobj, &connector->kobj, "connector");
@@ -660,16 +699,30 @@ static int connector_bind(struct device *dev, struct device *connector, void *da
return ret;
ret = sysfs_create_link(&connector->kobj, &dev->kobj, dev_name(dev));
- if (ret)
+ if (ret) {
sysfs_remove_link(&dev->kobj, "connector");
+ return ret;
+ }
+
+ port_dev->connector = data;
- return ret;
+ /*
+ * If there is already USB device connected to the port, letting the
+ * Type-C connector know about it immediately.
+ */
+ if (port_dev->child)
+ typec_attach(port_dev->connector, &port_dev->child->dev);
+
+ return 0;
}
static void connector_unbind(struct device *dev, struct device *connector, void *data)
{
+ struct usb_port *port_dev = to_usb_port(dev);
+
sysfs_remove_link(&connector->kobj, dev_name(dev));
sysfs_remove_link(&dev->kobj, "connector");
+ port_dev->connector = NULL;
}
static const struct component_ops connector_ops = {
@@ -693,11 +746,13 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
return -ENOMEM;
}
+ port_dev->connect_type = usb_of_get_connect_type(hdev, port1);
hub->ports[port1 - 1] = port_dev;
port_dev->portnum = port1;
set_bit(port1, hub->power_bits);
port_dev->dev.parent = hub->intfdev;
if (hub_is_superspeed(hdev)) {
+ port_dev->is_superspeed = 1;
port_dev->usb3_lpm_u1_permit = 1;
port_dev->usb3_lpm_u2_permit = 1;
port_dev->dev.groups = port_dev_usb3_group;
@@ -705,8 +760,6 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
port_dev->dev.groups = port_dev_group;
port_dev->dev.type = &usb_port_device_type;
port_dev->dev.driver = &usb_port_driver;
- if (hub_is_superspeed(hub->hdev))
- port_dev->is_superspeed = 1;
dev_set_name(&port_dev->dev, "%s-port%d", dev_name(&hub->hdev->dev),
port1);
mutex_init(&port_dev->status_lock);
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 15e9bd180a1d..b4783574b8e6 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -138,6 +138,9 @@ static int quirks_param_set(const char *value, const struct kernel_param *kp)
case 'o':
flags |= USB_QUIRK_HUB_SLOW_RESET;
break;
+ case 'p':
+ flags |= USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT;
+ break;
/* Ignore unrecognized flag characters */
}
}
@@ -527,6 +530,10 @@ static const struct usb_device_id usb_quirk_list[] = {
{ USB_DEVICE(0x2386, 0x350e), .driver_info = USB_QUIRK_NO_LPM },
+ /* APTIV AUTOMOTIVE HUB */
+ { USB_DEVICE(0x2c48, 0x0132), .driver_info =
+ USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT },
+
/* DJI CineSSD */
{ USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM },
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 5d21718afb05..d83231d6736a 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -273,9 +273,10 @@ static ssize_t avoid_reset_quirk_store(struct device *dev,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
- int val, rc;
+ bool val;
+ int rc;
- if (sscanf(buf, "%d", &val) != 1 || val < 0 || val > 1)
+ if (kstrtobool(buf, &val) != 0)
return -EINVAL;
rc = usb_lock_device_interruptible(udev);
if (rc < 0)
@@ -322,13 +323,14 @@ static ssize_t persist_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
- int value, rc;
+ bool value;
+ int rc;
/* Hubs are always enabled for USB_PERSIST */
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
return -EPERM;
- if (sscanf(buf, "%d", &value) != 1)
+ if (kstrtobool(buf, &value) != 0)
return -EINVAL;
rc = usb_lock_device_interruptible(udev);
@@ -739,14 +741,14 @@ static ssize_t authorized_store(struct device *dev,
{
ssize_t result;
struct usb_device *usb_dev = to_usb_device(dev);
- unsigned val;
- result = sscanf(buf, "%u\n", &val);
- if (result != 1)
+ bool val;
+
+ if (kstrtobool(buf, &val) != 0)
result = -EINVAL;
- else if (val == 0)
- result = usb_deauthorize_device(usb_dev);
- else
+ else if (val)
result = usb_authorize_device(usb_dev);
+ else
+ result = usb_deauthorize_device(usb_dev);
return result < 0 ? result : size;
}
static DEVICE_ATTR_IGNORE_LOCKDEP(authorized, S_IRUGO | S_IWUSR,
@@ -847,16 +849,10 @@ static const struct attribute_group dev_string_attr_grp = {
.is_visible = dev_string_attrs_are_visible,
};
-const struct attribute_group *usb_device_groups[] = {
- &dev_attr_grp,
- &dev_string_attr_grp,
- NULL
-};
-
/* Binary descriptors */
static ssize_t
-read_descriptors(struct file *filp, struct kobject *kobj,
+descriptors_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
@@ -878,7 +874,7 @@ read_descriptors(struct file *filp, struct kobject *kobj,
srclen = sizeof(struct usb_device_descriptor);
} else {
src = udev->rawdescriptors[cfgno];
- srclen = __le16_to_cpu(udev->config[cfgno].desc.
+ srclen = le16_to_cpu(udev->config[cfgno].desc.
wTotalLength);
}
if (off < srclen) {
@@ -893,11 +889,69 @@ read_descriptors(struct file *filp, struct kobject *kobj,
}
return count - nleft;
}
+static BIN_ATTR_RO(descriptors, 18 + 65535); /* dev descr + max-size raw descriptor */
+
+static ssize_t
+bos_descriptors_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct usb_device *udev = to_usb_device(dev);
+ struct usb_host_bos *bos = udev->bos;
+ struct usb_bos_descriptor *desc;
+ size_t desclen, n = 0;
+
+ if (bos) {
+ desc = bos->desc;
+ desclen = le16_to_cpu(desc->wTotalLength);
+ if (off < desclen) {
+ n = min(count, desclen - (size_t) off);
+ memcpy(buf, (void *) desc + off, n);
+ }
+ }
+ return n;
+}
+static BIN_ATTR_RO(bos_descriptors, 65535); /* max-size BOS */
+
+/* When modifying this list, be sure to modify dev_bin_attrs_are_visible()
+ * accordingly.
+ */
+static struct bin_attribute *dev_bin_attrs[] = {
+ &bin_attr_descriptors,
+ &bin_attr_bos_descriptors,
+ NULL
+};
+
+static umode_t dev_bin_attrs_are_visible(struct kobject *kobj,
+ struct bin_attribute *a, int n)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct usb_device *udev = to_usb_device(dev);
+
+ /*
+ * There's no need to check if the descriptors attribute should
+ * be visible because all devices have a device descriptor. The
+ * bos_descriptors attribute should be visible if and only if
+ * the device has a BOS, so check if it exists here.
+ */
+ if (a == &bin_attr_bos_descriptors) {
+ if (udev->bos == NULL)
+ return 0;
+ }
+ return a->attr.mode;
+}
+
+static const struct attribute_group dev_bin_attr_grp = {
+ .bin_attrs = dev_bin_attrs,
+ .is_bin_visible = dev_bin_attrs_are_visible,
+};
-static struct bin_attribute dev_bin_attr_descriptors = {
- .attr = {.name = "descriptors", .mode = 0444},
- .read = read_descriptors,
- .size = 18 + 65535, /* dev descr + max-size raw descriptor */
+const struct attribute_group *usb_device_groups[] = {
+ &dev_attr_grp,
+ &dev_string_attr_grp,
+ &dev_bin_attr_grp,
+ NULL
};
/*
@@ -1015,10 +1069,6 @@ int usb_create_sysfs_dev_files(struct usb_device *udev)
struct device *dev = &udev->dev;
int retval;
- retval = device_create_bin_file(dev, &dev_bin_attr_descriptors);
- if (retval)
- goto error;
-
retval = add_persist_attributes(dev);
if (retval)
goto error;
@@ -1048,7 +1098,6 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev)
remove_power_attributes(dev);
remove_persist_attributes(dev);
- device_remove_bin_file(dev, &dev_bin_attr_descriptors);
}
/* Interface Association Descriptor fields */
@@ -1168,14 +1217,24 @@ static ssize_t interface_authorized_store(struct device *dev,
{
struct usb_interface *intf = to_usb_interface(dev);
bool val;
+ struct kernfs_node *kn;
if (kstrtobool(buf, &val) != 0)
return -EINVAL;
- if (val)
+ if (val) {
usb_authorize_interface(intf);
- else
- usb_deauthorize_interface(intf);
+ } else {
+ /*
+ * Prevent deadlock if another process is concurrently
+ * trying to unregister intf.
+ */
+ kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
+ if (kn) {
+ usb_deauthorize_interface(intf);
+ sysfs_unbreak_active_protection(kn);
+ }
+ }
return count;
}
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index a34b22537d7c..7f8a912d4fe2 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -142,12 +142,19 @@ int usb_acpi_set_power_state(struct usb_device *hdev, int index, bool enable)
}
EXPORT_SYMBOL_GPL(usb_acpi_set_power_state);
-static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle,
- struct acpi_pld_info *pld)
+/*
+ * Private to usb-acpi, all the core needs to know is that
+ * port_dev->location is non-zero when it has been set by the firmware.
+ */
+#define USB_ACPI_LOCATION_VALID (1 << 31)
+
+static void
+usb_acpi_get_connect_type(struct usb_port *port_dev, acpi_handle *handle)
{
enum usb_port_connect_type connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *upc = NULL;
+ struct acpi_pld_info *pld = NULL;
acpi_status status;
/*
@@ -158,6 +165,12 @@ static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle,
* a usb device is directly hard-wired to the port. If no visible and
* no connectable, the port would be not used.
*/
+
+ status = acpi_get_physical_device_location(handle, &pld);
+ if (ACPI_SUCCESS(status) && pld)
+ port_dev->location = USB_ACPI_LOCATION_VALID |
+ pld->group_token << 8 | pld->group_position;
+
status = acpi_evaluate_object(handle, "_UPC", NULL, &buffer);
if (ACPI_FAILURE(status))
goto out;
@@ -166,25 +179,22 @@ static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle,
if (!upc || (upc->type != ACPI_TYPE_PACKAGE) || upc->package.count != 4)
goto out;
+ /* UPC states port is connectable */
if (upc->package.elements[0].integer.value)
- if (pld->user_visible)
+ if (!pld)
+ ; /* keep connect_type as unknown */
+ else if (pld->user_visible)
connect_type = USB_PORT_CONNECT_TYPE_HOT_PLUG;
else
connect_type = USB_PORT_CONNECT_TYPE_HARD_WIRED;
- else if (!pld->user_visible)
+ else
connect_type = USB_PORT_NOT_USED;
out:
+ port_dev->connect_type = connect_type;
kfree(upc);
- return connect_type;
+ ACPI_FREE(pld);
}
-
-/*
- * Private to usb-acpi, all the core needs to know is that
- * port_dev->location is non-zero when it has been set by the firmware.
- */
-#define USB_ACPI_LOCATION_VALID (1 << 31)
-
static struct acpi_device *
usb_acpi_get_companion_for_port(struct usb_port *port_dev)
{
@@ -222,22 +232,12 @@ static struct acpi_device *
usb_acpi_find_companion_for_port(struct usb_port *port_dev)
{
struct acpi_device *adev;
- struct acpi_pld_info *pld;
- acpi_handle *handle;
- acpi_status status;
adev = usb_acpi_get_companion_for_port(port_dev);
if (!adev)
return NULL;
- handle = adev->handle;
- status = acpi_get_physical_device_location(handle, &pld);
- if (ACPI_SUCCESS(status) && pld) {
- port_dev->location = USB_ACPI_LOCATION_VALID
- | pld->group_token << 8 | pld->group_position;
- port_dev->connect_type = usb_acpi_get_connect_type(handle, pld);
- ACPI_FREE(pld);
- }
+ usb_acpi_get_connect_type(port_dev, adev->handle);
return adev;
}
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 2a938cf47ccd..a0c432b14b20 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -431,7 +431,7 @@ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor)
struct device *dev;
argb.minor = minor;
- argb.drv = &drv->drvwrap.driver;
+ argb.drv = &drv->driver;
dev = bus_find_device(&usb_bus_type, NULL, &argb, __find_interface);
@@ -592,7 +592,7 @@ static char *usb_devnode(const struct device *dev,
usb_dev->bus->busnum, usb_dev->devnum);
}
-struct device_type usb_device_type = {
+const struct device_type usb_device_type = {
.name = "usb_device",
.release = usb_release_dev,
.uevent = usb_dev_uevent,
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 60363153fc3f..b8324ea05b20 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -144,10 +144,10 @@ static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
extern const struct class usbmisc_class;
extern const struct bus_type usb_bus_type;
extern struct mutex usb_port_peer_mutex;
-extern struct device_type usb_device_type;
-extern struct device_type usb_if_device_type;
-extern struct device_type usb_ep_device_type;
-extern struct device_type usb_port_device_type;
+extern const struct device_type usb_device_type;
+extern const struct device_type usb_if_device_type;
+extern const struct device_type usb_ep_device_type;
+extern const struct device_type usb_port_device_type;
extern struct usb_device_driver usb_generic_driver;
static inline int is_usb_device(const struct device *dev)
@@ -175,13 +175,7 @@ static inline int is_root_hub(struct usb_device *udev)
return (udev->parent == NULL);
}
-/* Do the same for device drivers and interface drivers. */
-
-static inline int is_usb_device_driver(struct device_driver *drv)
-{
- return container_of(drv, struct usbdrv_wrap, driver)->
- for_devices;
-}
+extern bool is_usb_device_driver(const struct device_driver *drv);
/* for labeling diagnostics */
extern const char *usbcore_name;
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