From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F05FFC56201 for ; Wed, 18 Nov 2020 18:47:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9AB6C246BE for ; Wed, 18 Nov 2020 18:47:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726663AbgKRSrN (ORCPT ); Wed, 18 Nov 2020 13:47:13 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:37612 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726224AbgKRSrN (ORCPT ); Wed, 18 Nov 2020 13:47:13 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: ezequiel) with ESMTPSA id DE85F1F4499B From: Ezequiel Garcia To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: kernel@collabora.com, Jonas Karlman , Hans Verkuil , Nicolas Dufresne , Philipp Zabel , Maxime Ripard , Paul Kocialkowski , Jernej Skrabec , Ezequiel Garcia Subject: [PATCH v3 01/13] media: ctrls: Add validate failure debug message Date: Wed, 18 Nov 2020 15:46:48 -0300 Message-Id: <20201118184700.331213-2-ezequiel@collabora.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201118184700.331213-1-ezequiel@collabora.com> References: <20201118184700.331213-1-ezequiel@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a debug message for control validation (validate_new) failures. This is useful to debug issues with ioctls such as VIDIOC_TRY_EXT_CTRLS and VIDIOC_S_EXT_CTRLS. Signed-off-by: Ezequiel Garcia --- drivers/media/v4l2-core/v4l2-ctrls.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index e4613fa61d31..3896da01320e 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -4115,8 +4115,13 @@ static int try_set_ext_ctrls_common(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl; ret = user_to_new(cs->controls + idx, ctrl); - if (!ret && ctrl->is_ptr) + if (!ret && ctrl->is_ptr) { ret = validate_new(ctrl, ctrl->p_new); + if (ret) + dprintk(vdev, + "failed to validate control %s (%d)\n", + v4l2_ctrl_get_name(ctrl->id), ret); + } idx = helpers[idx].next; } while (!ret && idx); -- 2.27.0