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usbcore: check device's LPM capability

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Check device's LPM capability by examining the bmAttibutes field of the
USB2.0 Extension Descriptor.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Andiry Xu 2011-09-23 14:19:48 -07:00 • committed by Greg Kroah-Hartman
commit 1ff4df5684
2 changed files with 10 additions and 2 deletions
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2
include/linux/usb.h
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@ -410,6 +410,7 @@ struct usb_tt;
* FIXME -- complete doc
* @authenticated: Crypto authentication passed
* @wusb: device is Wireless USB
* @lpm_capable: device supports LPM
* @string_langid: language ID for strings
* @product: iProduct string, if present (static)
* @manufacturer: iManufacturer string, if present (static)
@ -472,6 +473,7 @@ struct usb_device {
unsigned authorized:1;
unsigned authenticated:1;
unsigned wusb:1;
unsigned lpm_capable:1;
int string_langid;
/* static strings from the device */