Due to USB controllers may have different restrictions, usb gadget layer needs to provide a generic way to inform gadget functions to complain with non-standard requirements.
This patch adds 'quirk_ep_out_aligned_size' field to struct usb_gadget to inform when controller's epout requires buffer size to be aligned to MaxPacketSize. Signed-off-by: David Cohen <[email protected]> --- include/linux/usb/gadget.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 942ef5e..9405d0f 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -540,6 +540,9 @@ struct usb_gadget { struct device dev; unsigned out_epnum; unsigned in_epnum; + + /* epout requires buffer size to be aligned to MaxPacketSize */ + unsigned quirk_ep_out_aligned_size:1; }; #define work_to_gadget(w) (container_of((w), struct usb_gadget, work)) -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
