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-rw-r--r--drivers/usb/core/buffer.c3
-rw-r--r--drivers/usb/core/config.c5
-rw-r--r--drivers/usb/core/driver.c3
-rw-r--r--drivers/usb/core/endpoint.c4
-rw-r--r--drivers/usb/core/file.c2
-rw-r--r--drivers/usb/core/generic.c2
-rw-r--r--drivers/usb/core/hub.c103
-rw-r--r--drivers/usb/core/message.c3
-rw-r--r--drivers/usb/core/notify.c2
-rw-r--r--drivers/usb/core/sysfs.c17
-rw-r--r--drivers/usb/core/urb.c5
-rw-r--r--drivers/usb/core/usb.c3
-rw-r--r--drivers/usb/core/usb.h5
13 files changed, 91 insertions, 66 deletions
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index 98e39f91723a..b9bf6e2eb6fe 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -3,6 +3,9 @@
*
* This implementation plugs in through generic "usb_bus" level methods,
* and should work with all USB controllers, regardless of bus type.
+ *
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/module.h>
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index a2d90aca779f..0aa9e7d697a5 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -1,3 +1,8 @@
+/*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
#include <linux/usb.h>
#include <linux/usb/ch9.h>
#include <linux/usb/hcd.h>
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index dadd1e8dfe09..cdee5130638b 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -15,6 +15,9 @@
* (usb_device_id matching changes by Adam J. Richter)
* (C) Copyright Greg Kroah-Hartman 2002-2003
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
+ *
* NOTE! This is not actually a driver at all, rather this is
* just a collection of helper routines that implement the
* matching, probing, releasing, suspending and resuming for
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index d8f37fbee848..a60bc830a056 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -5,8 +5,10 @@
* (C) Copyright 2002,2004 IBM Corp.
* (C) Copyright 2006 Novell Inc.
*
- * Endpoint sysfs stuff
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*
+ * Endpoint sysfs stuff
*/
#include <linux/kernel.h>
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 822ced9639aa..e26bd5e773ad 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -13,6 +13,8 @@
* (usb_device_id matching changes by Adam J. Richter)
* (C) Copyright Greg Kroah-Hartman 2002-2003
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/module.h>
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index 358ca8dd784f..bd3e0c5a6db2 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -15,6 +15,8 @@
* (usb_device_id matching changes by Adam J. Richter)
* (C) Copyright Greg Kroah-Hartman 2002-2003
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/usb.h>
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index cbb146736f57..71bf1c7635de 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -6,6 +6,8 @@
* (C) Copyright 1999 Gregory P. Smith
* (C) Copyright 2001 Brad Hards (bhards@bigpond.net.au)
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/kernel.h>
@@ -101,6 +103,8 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
static void hub_release(struct kref *kref);
static int usb_reset_and_verify_device(struct usb_device *udev);
+static void hub_usb3_port_prepare_disable(struct usb_hub *hub,
+ struct usb_port *port_dev);
static inline char *portspeed(struct usb_hub *hub, int portstatus)
{
@@ -899,82 +903,28 @@ static int hub_set_port_link_state(struct usb_hub *hub, int port1,
}
/*
- * If USB 3.0 ports are placed into the Disabled state, they will no longer
- * detect any device connects or disconnects. This is generally not what the
- * USB core wants, since it expects a disabled port to produce a port status
- * change event when a new device connects.
- *
- * Instead, set the link state to Disabled, wait for the link to settle into
- * that state, clear any change bits, and then put the port into the RxDetect
- * state.
+ * USB-3 does not have a similar link state as USB-2 that will avoid negotiating
+ * a connection with a plugged-in cable but will signal the host when the cable
+ * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices
*/
-static int hub_usb3_port_disable(struct usb_hub *hub, int port1)
-{
- int ret;
- int total_time;
- u16 portchange, portstatus;
-
- if (!hub_is_superspeed(hub->hdev))
- return -EINVAL;
-
- ret = hub_port_status(hub, port1, &portstatus, &portchange);
- if (ret < 0)
- return ret;
-
- /*
- * USB controller Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
- * Controller [1022:7814] will have spurious result making the following
- * usb 3.0 device hotplugging route to the 2.0 root hub and recognized
- * as high-speed device if we set the usb 3.0 port link state to
- * Disabled. Since it's already in USB_SS_PORT_LS_RX_DETECT state, we
- * check the state here to avoid the bug.
- */
- if ((portstatus & USB_PORT_STAT_LINK_STATE) ==
- USB_SS_PORT_LS_RX_DETECT) {
- dev_dbg(&hub->ports[port1 - 1]->dev,
- "Not disabling port; link state is RxDetect\n");
- return ret;
- }
-
- ret = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_SS_DISABLED);
- if (ret)
- return ret;
-
- /* Wait for the link to enter the disabled state. */
- for (total_time = 0; ; total_time += HUB_DEBOUNCE_STEP) {
- ret = hub_port_status(hub, port1, &portstatus, &portchange);
- if (ret < 0)
- return ret;
-
- if ((portstatus & USB_PORT_STAT_LINK_STATE) ==
- USB_SS_PORT_LS_SS_DISABLED)
- break;
- if (total_time >= HUB_DEBOUNCE_TIMEOUT)
- break;
- msleep(HUB_DEBOUNCE_STEP);
- }
- if (total_time >= HUB_DEBOUNCE_TIMEOUT)
- dev_warn(&hub->ports[port1 - 1]->dev,
- "Could not disable after %d ms\n", total_time);
-
- return hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_RX_DETECT);
-}
-
static int hub_port_disable(struct usb_hub *hub, int port1, int set_state)
{
struct usb_port *port_dev = hub->ports[port1 - 1];
struct usb_device *hdev = hub->hdev;
int ret = 0;
- if (port_dev->child && set_state)
- usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED);
if (!hub->error) {
- if (hub_is_superspeed(hub->hdev))
- ret = hub_usb3_port_disable(hub, port1);
- else
+ if (hub_is_superspeed(hub->hdev)) {
+ hub_usb3_port_prepare_disable(hub, port_dev);
+ ret = hub_set_port_link_state(hub, port_dev->portnum,
+ USB_SS_PORT_LS_U3);
+ } else {
ret = usb_clear_port_feature(hdev, port1,
USB_PORT_FEAT_ENABLE);
+ }
}
+ if (port_dev->child && set_state)
+ usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED);
if (ret && ret != -ENODEV)
dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret);
return ret;
@@ -4140,6 +4090,26 @@ void usb_unlocked_enable_lpm(struct usb_device *udev)
}
EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm);
+/* usb3 devices use U3 for disabled, make sure remote wakeup is disabled */
+static void hub_usb3_port_prepare_disable(struct usb_hub *hub,
+ struct usb_port *port_dev)
+{
+ struct usb_device *udev = port_dev->child;
+ int ret;
+
+ if (udev && udev->port_is_suspended && udev->do_remote_wakeup) {
+ ret = hub_set_port_link_state(hub, port_dev->portnum,
+ USB_SS_PORT_LS_U0);
+ if (!ret) {
+ msleep(USB_RESUME_TIMEOUT);
+ ret = usb_disable_remote_wakeup(udev);
+ }
+ if (ret)
+ dev_warn(&udev->dev,
+ "Port disable: can't disable remote wake\n");
+ udev->do_remote_wakeup = 0;
+ }
+}
#else /* CONFIG_PM */
@@ -4147,6 +4117,9 @@ EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm);
#define hub_resume NULL
#define hub_reset_resume NULL
+static inline void hub_usb3_port_prepare_disable(struct usb_hub *hub,
+ struct usb_port *port_dev) { }
+
int usb_disable_lpm(struct usb_device *udev)
{
return 0;
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 3a4707746157..dea55914d641 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1,5 +1,8 @@
/*
* message.c - synchronous message handling
+ *
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <linux/pci.h> /* for scatterlist macros */
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c
index 7728c91dfa2e..b12a463a3e22 100644
--- a/drivers/usb/core/notify.c
+++ b/drivers/usb/core/notify.c
@@ -6,6 +6,8 @@
* notifier functions originally based on those in kernel/sys.c
* but fixed up to not be so broken.
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index c953a0f1c695..dfc68ed24db1 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -7,6 +7,8 @@
*
* All of the sysfs file attributes for usb devices and interfaces.
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
*/
@@ -14,6 +16,7 @@
#include <linux/string.h>
#include <linux/usb.h>
#include <linux/usb/quirks.h>
+#include <linux/of.h>
#include "usb.h"
/* Active configuration fields */
@@ -104,6 +107,17 @@ static ssize_t bConfigurationValue_store(struct device *dev,
static DEVICE_ATTR_IGNORE_LOCKDEP(bConfigurationValue, S_IRUGO | S_IWUSR,
bConfigurationValue_show, bConfigurationValue_store);
+#ifdef CONFIG_OF
+static ssize_t devspec_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct device_node *of_node = dev->of_node;
+
+ return sprintf(buf, "%s\n", of_node_full_name(of_node));
+}
+static DEVICE_ATTR_RO(devspec);
+#endif
+
/* String fields */
#define usb_string_attr(name) \
static ssize_t name##_show(struct device *dev, \
@@ -786,6 +800,9 @@ static struct attribute *dev_attrs[] = {
&dev_attr_remove.attr,
&dev_attr_removable.attr,
&dev_attr_ltm_capable.attr,
+#ifdef CONFIG_OF
+ &dev_attr_devspec.attr,
+#endif
NULL,
};
static struct attribute_group dev_attr_grp = {
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index bd688a0661f9..d75cb8c0f7df 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -1,3 +1,8 @@
+/*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
#include <linux/module.h>
#include <linux/string.h>
#include <linux/bitops.h>
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 592151461017..a2ccc69fb45c 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -12,6 +12,9 @@
* (usb_device_id matching changes by Adam J. Richter)
* (C) Copyright Greg Kroah-Hartman 2002-2003
*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
+ *
* NOTE! This is not actually a driver at all, rather this is
* just a collection of helper routines that implement the
* generic USB things that the real drivers can use..
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 53318126ed91..dc6949248823 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -1,3 +1,8 @@
+/*
+ * Released under the GPLv2 only.
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
#include <linux/pm.h>
#include <linux/acpi.h>
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-14 07:25:22 +0000