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path: root/drivers/usb/core
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-rw-r--r--drivers/usb/core/driver.c64
-rw-r--r--drivers/usb/core/generic.c16
-rw-r--r--drivers/usb/core/hub.c94
-rw-r--r--drivers/usb/core/port.c5
-rw-r--r--drivers/usb/core/quirks.c7
-rw-r--r--drivers/usb/core/usb.c2
-rw-r--r--drivers/usb/core/usb.h8
7 files changed, 139 insertions, 57 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index f58a0299fb3b..e01b1913d02b 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);
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/hub.c b/drivers/usb/core/hub.c
index 87480a6e6d93..e38a4124f610 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -47,12 +47,24 @@
#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
@@ -1904,6 +1916,14 @@ 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);
@@ -2033,9 +2053,19 @@ 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);
+ }
}
}
@@ -2368,17 +2398,25 @@ 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
@@ -4626,7 +4664,12 @@ 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,
@@ -4639,11 +4682,11 @@ 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. */
@@ -5895,6 +5938,21 @@ 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/port.c b/drivers/usb/core/port.c
index c628c1abc907..4d63496f98b6 100644
--- a/drivers/usb/core/port.c
+++ b/drivers/usb/core/port.c
@@ -573,7 +573,7 @@ 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 +584,8 @@ 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 */
}
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/usb.c b/drivers/usb/core/usb.c
index 2a938cf47ccd..dc8d9228a5e7 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);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 60363153fc3f..bfecb50773b6 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -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;
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-15 14:19:55 +0000