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| author | Andiry Xu <andiry.xu@amd.com> | 2011-09-23 14:19:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-26 15:51:08 -0700 |
| commit | 3148bf041d169a083aa31bd69bedd5bfb7ffe215 (patch) | |
| tree | 0a6620dc6e2da37c291c195de78819d2e306296f /drivers/usb/core/hub.c | |
| parent | 5023829969f56b78a16da94f34c605bbbb344018 (diff) | |
| download | lwn-3148bf041d169a083aa31bd69bedd5bfb7ffe215.tar.gz lwn-3148bf041d169a083aa31bd69bedd5bfb7ffe215.zip | |
usbcore: get BOS descriptor set
This commit gets BOS(Binary Device Object Store) descriptor set for Super
Speed devices and High Speed devices which support BOS descriptor.
BOS descriptor is used to report additional USB device-level capabilities
that are not reported via the Device descriptor. By getting BOS descriptor
set, driver can check device's device-level capability such as LPM
capability.
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>
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1c155123c32f..7a2514322bfd 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3083,6 +3083,9 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, goto fail; } + if (udev->wusb == 0 && le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) + usb_get_bos_descriptor(udev); + retval = 0; /* notify HCD that we have a device connected and addressed */ if (hcd->driver->update_device) |