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-rw-r--r--drivers/usb/core/Kconfig16
-rw-r--r--drivers/usb/core/devices.c1
-rw-r--r--drivers/usb/core/devio.c8
-rw-r--r--drivers/usb/core/driver.c157
-rw-r--r--drivers/usb/core/endpoint.c2
-rw-r--r--drivers/usb/core/file.c1
-rw-r--r--drivers/usb/core/hcd-pci.c8
-rw-r--r--drivers/usb/core/hcd.c3
-rw-r--r--drivers/usb/core/hub.c32
-rw-r--r--drivers/usb/core/inode.c13
-rw-r--r--drivers/usb/core/message.c1
-rw-r--r--drivers/usb/core/quirks.c15
-rw-r--r--drivers/usb/core/sysfs.c84
-rw-r--r--drivers/usb/core/usb.c3
-rw-r--r--drivers/usb/core/usb.h2
15 files changed, 117 insertions, 229 deletions
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 9eed5b52d9d..18d02e32a3d 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -107,17 +107,25 @@ config USB_SUSPEND
If you are unsure about this, say N here.
config USB_OTG
- bool
+ bool "OTG support"
depends on USB && EXPERIMENTAL
depends on USB_SUSPEND
default n
+ help
+ The most notable feature of USB OTG is support for a
+ "Dual-Role" device, which can act as either a device
+ or a host. The initial role is decided by the type of
+ plug inserted and can be changed later when two dual
+ role devices talk to each other.
+ Select this only if your board has Mini-AB/Micro-AB
+ connector.
config USB_OTG_WHITELIST
bool "Rely on OTG Targeted Peripherals List"
- depends on USB_OTG || EMBEDDED
+ depends on USB_OTG || EXPERT
default y if USB_OTG
- default n if EMBEDDED
+ default n if EXPERT
help
If you say Y here, the "otg_whitelist.h" file will be used as a
product whitelist, so USB peripherals not listed there will be
@@ -133,7 +141,7 @@ config USB_OTG_WHITELIST
config USB_OTG_BLACKLIST_HUB
bool "Disable external hubs"
- depends on USB_OTG || EMBEDDED
+ depends on USB_OTG || EXPERT
help
If you say Y here, then Linux will refuse to enumerate
external hubs. OTG hosts are allowed to reduce hardware
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index ddb4dc98092..a3d2e239965 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -54,7 +54,6 @@
#include <linux/gfp.h>
#include <linux/poll.h>
#include <linux/usb.h>
-#include <linux/smp_lock.h>
#include <linux/usbdevice_fs.h>
#include <linux/usb/hcd.h>
#include <linux/mutex.h>
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index f1aaff6202a..a7131ad630f 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -37,7 +37,6 @@
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/signal.h>
#include <linux/poll.h>
#include <linux/module.h>
@@ -965,10 +964,11 @@ static int proc_getdriver(struct dev_state *ps, void __user *arg)
static int proc_connectinfo(struct dev_state *ps, void __user *arg)
{
- struct usbdevfs_connectinfo ci;
+ struct usbdevfs_connectinfo ci = {
+ .devnum = ps->dev->devnum,
+ .slow = ps->dev->speed == USB_SPEED_LOW
+ };
- ci.devnum = ps->dev->devnum;
- ci.slow = ps->dev->speed == USB_SPEED_LOW;
if (copy_to_user(arg, &ci, sizeof(ci)))
return -EFAULT;
return 0;
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index c0e60fbcb04..fca61720b87 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -27,7 +27,6 @@
#include <linux/usb.h>
#include <linux/usb/quirks.h>
#include <linux/usb/hcd.h>
-#include <linux/pm_runtime.h>
#include "usb.h"
@@ -376,7 +375,7 @@ static int usb_unbind_interface(struct device *dev)
* Just re-enable it without affecting the endpoint toggles.
*/
usb_enable_interface(udev, intf, false);
- } else if (!error && intf->dev.power.status == DPM_ON) {
+ } else if (!error && !intf->dev.power.in_suspend) {
r = usb_set_interface(udev, intf->altsetting[0].
desc.bInterfaceNumber, 0);
if (r < 0)
@@ -961,7 +960,7 @@ void usb_rebind_intf(struct usb_interface *intf)
}
/* Try to rebind the interface */
- if (intf->dev.power.status == DPM_ON) {
+ if (!intf->dev.power.in_suspend) {
intf->needs_binding = 0;
rc = device_attach(&intf->dev);
if (rc < 0)
@@ -1108,8 +1107,7 @@ static int usb_resume_interface(struct usb_device *udev,
if (intf->condition == USB_INTERFACE_UNBOUND) {
/* Carry out a deferred switch to altsetting 0 */
- if (intf->needs_altsetting0 &&
- intf->dev.power.status == DPM_ON) {
+ if (intf->needs_altsetting0 && !intf->dev.power.in_suspend) {
usb_set_interface(udev, intf->altsetting[0].
desc.bInterfaceNumber, 0);
intf->needs_altsetting0 = 0;
@@ -1262,6 +1260,7 @@ static int usb_resume_both(struct usb_device *udev, pm_message_t msg)
udev->reset_resume);
}
}
+ usb_mark_last_busy(udev);
done:
dev_vdbg(&udev->dev, "%s: status %d\n", __func__, status);
@@ -1329,7 +1328,6 @@ int usb_resume(struct device *dev, pm_message_t msg)
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
- udev->last_busy = jiffies;
do_unbind_rebind(udev, DO_REBIND);
}
}
@@ -1397,33 +1395,8 @@ void usb_autosuspend_device(struct usb_device *udev)
{
int status;
- udev->last_busy = jiffies;
- status = pm_runtime_put_sync(&udev->dev);
- dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
- __func__, atomic_read(&udev->dev.power.usage_count),
- status);
-}
-
-/**
- * usb_try_autosuspend_device - attempt an autosuspend of a USB device and its interfaces
- * @udev: the usb_device to autosuspend
- *
- * This routine should be called when a core subsystem thinks @udev may
- * be ready to autosuspend.
- *
- * @udev's usage counter left unchanged. If it is 0 and all the interfaces
- * are inactive then an autosuspend will be attempted. The attempt may
- * fail or be delayed.
- *
- * The caller must hold @udev's device lock.
- *
- * This routine can run only in process context.
- */
-void usb_try_autosuspend_device(struct usb_device *udev)
-{
- int status;
-
- status = pm_runtime_idle(&udev->dev);
+ usb_mark_last_busy(udev);
+ status = pm_runtime_put_sync_autosuspend(&udev->dev);
dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
__func__, atomic_read(&udev->dev.power.usage_count),
status);
@@ -1482,7 +1455,7 @@ void usb_autopm_put_interface(struct usb_interface *intf)
struct usb_device *udev = interface_to_usbdev(intf);
int status;
- udev->last_busy = jiffies;
+ usb_mark_last_busy(udev);
atomic_dec(&intf->pm_usage_cnt);
status = pm_runtime_put_sync(&intf->dev);
dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
@@ -1509,32 +1482,11 @@ EXPORT_SYMBOL_GPL(usb_autopm_put_interface);
void usb_autopm_put_interface_async(struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
- unsigned long last_busy;
- int status = 0;
+ int status;
- last_busy = udev->last_busy;
- udev->last_busy = jiffies;
+ usb_mark_last_busy(udev);
atomic_dec(&intf->pm_usage_cnt);
- pm_runtime_put_noidle(&intf->dev);
-
- if (udev->dev.power.runtime_auto) {
- /* Optimization: Don't schedule a delayed autosuspend if
- * the timer is already running and the expiration time
- * wouldn't change.
- *
- * We have to use the interface's timer. Attempts to
- * schedule a suspend for the device would fail because
- * the interface is still active.
- */
- if (intf->dev.power.timer_expires == 0 ||
- round_jiffies_up(last_busy) !=
- round_jiffies_up(jiffies)) {
- status = pm_schedule_suspend(&intf->dev,
- jiffies_to_msecs(
- round_jiffies_up_relative(
- udev->autosuspend_delay)));
- }
- }
+ status = pm_runtime_put(&intf->dev);
dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
__func__, atomic_read(&intf->dev.power.usage_count),
status);
@@ -1554,7 +1506,7 @@ void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
- udev->last_busy = jiffies;
+ usb_mark_last_busy(udev);
atomic_dec(&intf->pm_usage_cnt);
pm_runtime_put_noidle(&intf->dev);
}
@@ -1612,18 +1564,9 @@ EXPORT_SYMBOL_GPL(usb_autopm_get_interface);
*/
int usb_autopm_get_interface_async(struct usb_interface *intf)
{
- int status = 0;
- enum rpm_status s;
-
- /* Don't request a resume unless the interface is already suspending
- * or suspended. Doing so would force a running suspend timer to be
- * cancelled.
- */
- pm_runtime_get_noresume(&intf->dev);
- s = ACCESS_ONCE(intf->dev.power.runtime_status);
- if (s == RPM_SUSPENDING || s == RPM_SUSPENDED)
- status = pm_request_resume(&intf->dev);
+ int status;
+ status = pm_runtime_get(&intf->dev);
if (status < 0 && status != -EINPROGRESS)
pm_runtime_put_noidle(&intf->dev);
else
@@ -1650,7 +1593,7 @@ void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
- udev->last_busy = jiffies;
+ usb_mark_last_busy(udev);
atomic_inc(&intf->pm_usage_cnt);
pm_runtime_get_noresume(&intf->dev);
}
@@ -1661,7 +1604,6 @@ static int autosuspend_check(struct usb_device *udev)
{
int w, i;
struct usb_interface *intf;
- unsigned long suspend_time, j;
/* Fail if autosuspend is disabled, or any interfaces are in use, or
* any interface drivers require remote wakeup but it isn't available.
@@ -1701,87 +1643,46 @@ static int autosuspend_check(struct usb_device *udev)
return -EOPNOTSUPP;
}
udev->do_remote_wakeup = w;
-
- /* If everything is okay but the device hasn't been idle for long
- * enough, queue a delayed autosuspend request.
- */
- j = ACCESS_ONCE(jiffies);
- suspend_time = udev->last_busy + udev->autosuspend_delay;
- if (time_before(j, suspend_time)) {
- pm_schedule_suspend(&udev->dev, jiffies_to_msecs(
- round_jiffies_up_relative(suspend_time - j)));
- return -EAGAIN;
- }
return 0;
}
static int usb_runtime_suspend(struct device *dev)
{
- int status = 0;
+ struct usb_device *udev = to_usb_device(dev);
+ int status;
/* A USB device can be suspended if it passes the various autosuspend
* checks. Runtime suspend for a USB device means suspending all the
* interfaces and then the device itself.
*/
- if (is_usb_device(dev)) {
- struct usb_device *udev = to_usb_device(dev);
-
- if (autosuspend_check(udev) != 0)
- return -EAGAIN;
-
- status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
-
- /* If an interface fails the suspend, adjust the last_busy
- * time so that we don't get another suspend attempt right
- * away.
- */
- if (status) {
- udev->last_busy = jiffies +
- (udev->autosuspend_delay == 0 ?
- HZ/2 : 0);
- }
-
- /* Prevent the parent from suspending immediately after */
- else if (udev->parent)
- udev->parent->last_busy = jiffies;
- }
+ if (autosuspend_check(udev) != 0)
+ return -EAGAIN;
- /* Runtime suspend for a USB interface doesn't mean anything. */
+ status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
return status;
}
static int usb_runtime_resume(struct device *dev)
{
+ struct usb_device *udev = to_usb_device(dev);
+ int status;
+
/* Runtime resume for a USB device means resuming both the device
* and all its interfaces.
*/
- if (is_usb_device(dev)) {
- struct usb_device *udev = to_usb_device(dev);
- int status;
-
- status = usb_resume_both(udev, PMSG_AUTO_RESUME);
- udev->last_busy = jiffies;
- return status;
- }
-
- /* Runtime resume for a USB interface doesn't mean anything. */
- return 0;
+ status = usb_resume_both(udev, PMSG_AUTO_RESUME);
+ return status;
}
static int usb_runtime_idle(struct device *dev)
{
+ struct usb_device *udev = to_usb_device(dev);
+
/* An idle USB device can be suspended if it passes the various
- * autosuspend checks. An idle interface can be suspended at
- * any time.
+ * autosuspend checks.
*/
- if (is_usb_device(dev)) {
- struct usb_device *udev = to_usb_device(dev);
-
- if (autosuspend_check(udev) != 0)
- return 0;
- }
-
- pm_runtime_suspend(dev);
+ if (autosuspend_check(udev) == 0)
+ pm_runtime_autosuspend(dev);
return 0;
}
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index 9da25056302..df502a98d0d 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -192,12 +192,12 @@ int usb_create_ep_devs(struct device *parent,
ep_dev->dev.parent = parent;
ep_dev->dev.release = ep_device_release;
dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress);
- device_enable_async_suspend(&ep_dev->dev);
retval = device_register(&ep_dev->dev);
if (retval)
goto error_register;
+ device_enable_async_suspend(&ep_dev->dev);
endpoint->ep_dev = ep_dev;
return retval;
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 9fe34fb78ef..cf6a5423de0 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -19,7 +19,6 @@
#include <linux/errno.h>
#include <linux/rwsem.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/usb.h>
#include "usb.h"
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 3799573bd38..f71e8e307e0 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -19,7 +19,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/pm_runtime.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
@@ -406,7 +405,12 @@ static int suspend_common(struct device *dev, bool do_wakeup)
return retval;
}
- synchronize_irq(pci_dev->irq);
+ /* If MSI-X is enabled, the driver will have synchronized all vectors
+ * in pci_suspend(). If MSI or legacy PCI is enabled, that will be
+ * synchronized here.
+ */
+ if (!hcd->msix_enabled)
+ synchronize_irq(pci_dev->irq);
/* Downstream ports from this root hub should already be quiesced, so
* there will be no DMA activity. Now we can shut down the upstream
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 61800f77dac..6a95017fa62 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -38,7 +38,6 @@
#include <asm/unaligned.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
-#include <linux/pm_runtime.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
@@ -1330,6 +1329,8 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
*/
if (usb_endpoint_xfer_control(&urb->ep->desc)) {
+ if (hcd->self.uses_pio_for_control)
+ return ret;
if (hcd->self.uses_dma) {
urb->setup_dma = dma_map_single(
hcd->self.controller,
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 27115b45edc..4310cc4b1cb 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -24,7 +24,6 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/freezer.h>
-#include <linux/pm_runtime.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
@@ -677,6 +676,8 @@ static void hub_init_func3(struct work_struct *ws);
static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
{
struct usb_device *hdev = hub->hdev;
+ struct usb_hcd *hcd;
+ int ret;
int port1;
int status;
bool need_debounce_delay = false;
@@ -715,6 +716,25 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
usb_autopm_get_interface_no_resume(
to_usb_interface(hub->intfdev));
return; /* Continues at init2: below */
+ } else if (type == HUB_RESET_RESUME) {
+ /* The internal host controller state for the hub device
+ * may be gone after a host power loss on system resume.
+ * Update the device's info so the HW knows it's a hub.
+ */
+ hcd = bus_to_hcd(hdev->bus);
+ if (hcd->driver->update_hub_device) {
+ ret = hcd->driver->update_hub_device(hcd, hdev,
+ &hub->tt, GFP_NOIO);
+ if (ret < 0) {
+ dev_err(hub->intfdev, "Host not "
+ "accepting hub info "
+ "update.\n");
+ dev_err(hub->intfdev, "LS/FS devices "
+ "and hubs may not work "
+ "under this hub\n.");
+ }
+ }
+ hub_power_on(hub, true);
} else {
hub_power_on(hub, true);
}
@@ -1804,8 +1824,15 @@ int usb_new_device(struct usb_device *udev)
/* Tell the runtime-PM framework the device is active */
pm_runtime_set_active(&udev->dev);
+ pm_runtime_get_noresume(&udev->dev);
+ pm_runtime_use_autosuspend(&udev->dev);
pm_runtime_enable(&udev->dev);
+ /* By default, forbid autosuspend for all devices. It will be
+ * allowed for hubs during binding.
+ */
+ usb_disable_autosuspend(udev);
+
err = usb_enumerate_device(udev); /* Read descriptors */
if (err < 0)
goto fail;
@@ -1831,6 +1858,8 @@ int usb_new_device(struct usb_device *udev)
}
(void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev);
+ usb_mark_last_busy(udev);
+ pm_runtime_put_sync_autosuspend(&udev->dev);
return err;
fail:
@@ -2221,6 +2250,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
usb_set_device_state(udev, USB_STATE_SUSPENDED);
msleep(10);
}
+ usb_mark_last_busy(hub->hdev);
return status;
}
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 9819a4cc3b2..1b125c224dc 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -39,7 +39,6 @@
#include <linux/parser.h>
#include <linux/notifier.h>
#include <linux/seq_file.h>
-#include <linux/smp_lock.h>
#include <linux/usb/hcd.h>
#include <asm/byteorder.h>
#include "usb.h"
@@ -344,17 +343,19 @@ static int usbfs_empty (struct dentry *dentry)
{
struct list_head *list;
- spin_lock(&dcache_lock);
-
+ spin_lock(&dentry->d_lock);
list_for_each(list, &dentry->d_subdirs) {
struct dentry *de = list_entry(list, struct dentry, d_u.d_child);
+
+ spin_lock_nested(&de->d_lock, DENTRY_D_LOCK_NESTED);
if (usbfs_positive(de)) {
- spin_unlock(&dcache_lock);
+ spin_unlock(&de->d_lock);
+ spin_unlock(&dentry->d_lock);
return 0;
}
+ spin_unlock(&de->d_lock);
}
-
- spin_unlock(&dcache_lock);
+ spin_unlock(&dentry->d_lock);
return 1;
}
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index d6e3e410477..83248742382 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1804,6 +1804,7 @@ free_interfaces:
INIT_WORK(&intf->reset_ws, __usb_queue_reset_device);
intf->minor = -1;
device_initialize(&intf->dev);
+ pm_runtime_no_callbacks(&intf->dev);
dev_set_name(&intf->dev, "%d-%s:%d.%d",
dev->bus->busnum, dev->devpath,
configuration, alt->desc.bInterfaceNumber);
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 25719da45e3..44c595432d6 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -117,21 +117,6 @@ void usb_detect_quirks(struct usb_device *udev)
dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
udev->quirks);
-#ifdef CONFIG_USB_SUSPEND
-
- /* By default, disable autosuspend for all devices. The hub driver
- * will enable it for hubs.
- */
- usb_disable_autosuspend(udev);
-
- /* Autosuspend can also be disabled if the initial autosuspend_delay
- * is negative.
- */
- if (udev->autosuspend_delay < 0)
- usb_autoresume_device(udev);
-
-#endif
-
/* For the present, all devices default to USB-PERSIST enabled */
#if 0 /* was: #ifdef CONFIG_PM */
/* Hubs are automatically enabled for USB-PERSIST */
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 448f5b47fc4..6781c369ce2 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -233,8 +233,6 @@ static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL);
#ifdef CONFIG_PM
-static const char power_group[] = "power";
-
static ssize_t
show_persist(struct device *dev, struct device_attribute *attr, char *buf)
{
@@ -278,7 +276,7 @@ static int add_persist_attributes(struct device *dev)
if (udev->descriptor.bDeviceClass != USB_CLASS_HUB)
rc = sysfs_add_file_to_group(&dev->kobj,
&dev_attr_persist.attr,
- power_group);
+ power_group_name);
}
return rc;
}
@@ -287,7 +285,7 @@ static void remove_persist_attributes(struct device *dev)
{
sysfs_remove_file_from_group(&dev->kobj,
&dev_attr_persist.attr,
- power_group);
+ power_group_name);
}
#else
@@ -336,44 +334,20 @@ static DEVICE_ATTR(active_duration, S_IRUGO, show_active_duration, NULL);
static ssize_t
show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct usb_device *udev = to_usb_device(dev);
-
- return sprintf(buf, "%d\n", udev->autosuspend_delay / HZ);
+ return sprintf(buf, "%d\n", dev->power.autosuspend_delay / 1000);
}
static ssize_t
set_autosuspend(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct usb_device *udev = to_usb_device(dev);
- int value, old_delay;
- int rc;
+ int value;
- if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ ||
- value <= - INT_MAX/HZ)
+ if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/1000 ||
+ value <= -INT_MAX/1000)
return -EINVAL;
- value *= HZ;
-
- usb_lock_device(udev);
- old_delay = udev->autosuspend_delay;
- udev->autosuspend_delay = value;
-
- if (old_delay < 0) { /* Autosuspend wasn't allowed */
- if (value >= 0)
- usb_autosuspend_device(udev);
- } else { /* Autosuspend was allowed */
- if (value < 0) {
- rc = usb_autoresume_device(udev);
- if (rc < 0) {
- count = rc;
- udev->autosuspend_delay = old_delay;
- }
- } else {
- usb_try_autosuspend_device(udev);
- }
- }
- usb_unlock_device(udev);
+ pm_runtime_set_autosuspend_delay(dev, value * 1000);
return count;
}
@@ -438,44 +412,30 @@ set_level(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level);
+static struct attribute *power_attrs[] = {
+ &dev_attr_autosuspend.attr,
+ &dev_attr_level.attr,
+ &dev_attr_connected_duration.attr,
+ &dev_attr_active_duration.attr,
+ NULL,
+};
+static struct attribute_group power_attr_group = {
+ .name = power_group_name,
+ .attrs = power_attrs,
+};
+
static int add_power_attributes(struct device *dev)
{
int rc = 0;
- if (is_usb_device(dev)) {
- rc = sysfs_add_file_to_group(&dev->kobj,
- &dev_attr_autosuspend.attr,
- power_group);
- if (rc == 0)
- rc = sysfs_add_file_to_group(&dev->kobj,
- &dev_attr_level.attr,
- power_group);
- if (rc == 0)
- rc = sysfs_add_file_to_group(&dev->kobj,
- &dev_attr_connected_duration.attr,
- power_group);
- if (rc == 0)
- rc = sysfs_add_file_to_group(&dev->kobj,
- &dev_attr_active_duration.attr,
- power_group);
- }
+ if (is_usb_device(dev))
+ rc = sysfs_merge_group(&dev->kobj, &power_attr_group);
return rc;
}
static void remove_power_attributes(struct device *dev)
{
- sysfs_remove_file_from_group(&dev->kobj,
- &dev_attr_active_duration.attr,
- power_group);
- sysfs_remove_file_from_group(&dev->kobj,
- &dev_attr_connected_duration.attr,
- power_group);
- sysfs_remove_file_from_group(&dev->kobj,
- &dev_attr_level.attr,
- power_group);
- sysfs_remove_file_from_group(&dev->kobj,
- &dev_attr_autosuspend.attr,
- power_group);
+ sysfs_unmerge_group(&dev->kobj, &power_attr_group);
}
#else
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index fdd4130fbb7..079cb57bab4 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -445,7 +445,8 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
INIT_LIST_HEAD(&dev->filelist);
#ifdef CONFIG_PM
- dev->autosuspend_delay = usb_autosuspend_delay * HZ;
+ pm_runtime_set_autosuspend_delay(&dev->dev,
+ usb_autosuspend_delay * 1000);
dev->connect_time = jiffies;
dev->active_duration = -jiffies;
#endif
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index cd882203ad3..b975450f403 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -75,14 +75,12 @@ static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
#ifdef CONFIG_USB_SUSPEND
extern void usb_autosuspend_device(struct usb_device *udev);
-extern void usb_try_autosuspend_device(struct usb_device *udev);
extern int usb_autoresume_device(struct usb_device *udev);
extern int usb_remote_wakeup(struct usb_device *dev);
#else
#define usb_autosuspend_device(udev) do {} while (0)
-#define usb_try_autosuspend_device(udev) do {} while (0)
static inline int usb_autoresume_device(struct usb_device *udev)
{
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-22 15:41:11 +0000