| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 11/92] usb: gadget: composite: enable BESL support | Date | Sat, 2 May 2015 21:02:26 +0200 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Felipe Balbi <balbi@ti.com>
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> Signed-off-by: Du, Changbin <changbin.du@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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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