usb: gadget: composite: enable BESL support

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@ti.com>
Cc: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index f80151932053d1f0216e9f21156c1a38e85a34bd..9536b6abf65b1378b2dbed3c919e77dfaec25c1d 100644 (file)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -560,7 +560,7 @@ static int bos_desc(struct usb_composite_dev *cdev)
        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