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| author | Ingo Molnar <mingo@elte.hu> | 2008-10-28 16:26:12 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-28 16:26:12 +0100 |
| commit | 7a9787e1eba95a166265e6a260cf30af04ef0a99 (patch) | |
| tree | e730a4565e0318140d2fbd2f0415d18a339d7336 /drivers/usb/core/sysfs.c | |
| parent | 41b9eb264c8407655db57b60b4457fe1b2ec9977 (diff) | |
| parent | 0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff) | |
Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks
Diffstat (limited to 'drivers/usb/core/sysfs.c')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 5e1f5d55bf0..f66fba11fbd 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -743,6 +743,29 @@ static ssize_t show_modalias(struct device *dev, } static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL); +static ssize_t show_supports_autosuspend(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_interface *intf; + struct usb_device *udev; + int ret; + + intf = to_usb_interface(dev); + udev = interface_to_usbdev(intf); + + usb_lock_device(udev); + /* Devices will be autosuspended even when an interface isn't claimed */ + if (!intf->dev.driver || + to_usb_driver(intf->dev.driver)->supports_autosuspend) + ret = sprintf(buf, "%u\n", 1); + else + ret = sprintf(buf, "%u\n", 0); + usb_unlock_device(udev); + + return ret; +} +static DEVICE_ATTR(supports_autosuspend, S_IRUGO, show_supports_autosuspend, NULL); + static struct attribute *intf_attrs[] = { &dev_attr_bInterfaceNumber.attr, &dev_attr_bAlternateSetting.attr, @@ -751,6 +774,7 @@ static struct attribute *intf_attrs[] = { &dev_attr_bInterfaceSubClass.attr, &dev_attr_bInterfaceProtocol.attr, &dev_attr_modalias.attr, + &dev_attr_supports_autosuspend.attr, NULL, }; static struct attribute_group intf_attr_grp = { |