[PATCH 3.14 11/92] usb: gadget: composite: enable BESL support

From: Greg Kroah-Hartman
Date: Sat May 02 2015 - 16:22:13 EST


3.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Felipe Balbi <balbi@xxxxxx>

commit a6615937bcd9234e6d6bb817c3701fce44d0a84d upstream.

According to USB 2.0 ECN Errata for Link Power
Management (USB2-LPM-Errata-final.pdf), BESL
must be enabled if LPM is enabled.

This helps with USB30CV TD 9.21 LPM L1
Suspend Resume Test.

Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Du, Changbin <changbin.du@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/usb/gadget/composite.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -528,7 +528,7 @@ static int bos_desc(struct usb_composite
usb_ext->bLength = USB_DT_USB_EXT_CAP_SIZE;
usb_ext->bDescriptorType = USB_DT_DEVICE_CAPABILITY;
usb_ext->bDevCapabilityType = USB_CAP_TYPE_EXT;
- usb_ext->bmAttributes = cpu_to_le32(USB_LPM_SUPPORT);
+ usb_ext->bmAttributes = cpu_to_le32(USB_LPM_SUPPORT | USB_BESL_SUPPORT);

/*
* The Superspeed USB Capability descriptor shall be implemented by all


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