From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from perceval.ideasonboard.com ([95.142.166.194]:37230 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754019Ab3AKNMX (ORCPT ); Fri, 11 Jan 2013 08:12:23 -0500 From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Hans Verkuil Subject: [PATCH 1/3] uvcvideo: Return -EACCES when trying to access a read/write-only control Date: Fri, 11 Jan 2013 14:13:58 +0100 Message-Id: <1357910040-27463-2-git-send-email-laurent.pinchart@ideasonboard.com> In-Reply-To: <1357910040-27463-1-git-send-email-laurent.pinchart@ideasonboard.com> References: <1357910040-27463-1-git-send-email-laurent.pinchart@ideasonboard.com> Sender: linux-media-owner@vger.kernel.org List-ID: Commit ba68c8530a263dc4de440fa10bb20a1c5b9d4ff5 (Partly revert "[media] uvcvideo: Set error_idx properly for extended controls API failures") also reverted commit 30ecb936cbcd83e3735625ac63e1b4466546f5fe ("uvcvideo: Return -EACCES when trying to access a read/write-only control") by mistake. Fix it. Signed-off-by: Laurent Pinchart --- drivers/media/usb/uvc/uvc_ctrl.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index 2bb7613..d5baab1 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -1431,8 +1431,10 @@ int uvc_ctrl_set(struct uvc_video_chain *chain, int ret; ctrl = uvc_find_control(chain, xctrl->id, &mapping); - if (ctrl == NULL || (ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR) == 0) + if (ctrl == NULL) return -EINVAL; + if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) + return -EACCES; /* Clamp out of range values. */ switch (mapping->v4l2_type) { -- 1.7.8.6