Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753480Ab3J2Vsp (ORCPT ); Tue, 29 Oct 2013 17:48:45 -0400 Received: from mga02.intel.com ([134.134.136.20]:6535 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753027Ab3J2Vso (ORCPT ); Tue, 29 Oct 2013 17:48:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,535,1378882800"; d="scan'208";a="400647233" From: David Cohen To: balbi@ti.com, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, David Cohen Subject: [RFC/PATCH v2 1/3] usb: gadget: add quirks field to struct usb_gadget Date: Tue, 29 Oct 2013 14:52:56 -0700 Message-Id: <1383083578-16447-2-git-send-email-david.a.cohen@linux.intel.com> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1383083578-16447-1-git-send-email-david.a.cohen@linux.intel.com> References: <1383083578-16447-1-git-send-email-david.a.cohen@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1281 Lines: 37 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 'quirks' field to struct usb_gadget and the first quirk called USB_GADGET_QUIRK_EP_OUT_ALIGNED_SIZE necessary to inform when controller's epout requires buffer size to be aligned to MaxPacketSize. Signed-off-by: David Cohen --- include/linux/usb/gadget.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 942ef5e..7014ad9 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -540,6 +540,11 @@ struct usb_gadget { struct device dev; unsigned out_epnum; unsigned in_epnum; + + u32 quirks; +/* epout requires buffer size to be aligned to MaxPacketSize */ +#define USB_GADGET_QUIRK_EP_OUT_ALIGNED_SIZE (1 << 0) + }; #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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/