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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 398DEC3F68F for ; Sat, 7 Dec 2019 18:23:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0632024673 for ; Sat, 7 Dec 2019 18:23:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rajagiritech-edu-in.20150623.gappssmtp.com header.i=@rajagiritech-edu-in.20150623.gappssmtp.com header.b="LG7Q8Mzt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726595AbfLGSWA (ORCPT ); Sat, 7 Dec 2019 13:22:00 -0500 Received: from mail-pl1-f171.google.com ([209.85.214.171]:36203 "EHLO mail-pl1-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726464AbfLGSV7 (ORCPT ); Sat, 7 Dec 2019 13:21:59 -0500 Received: by mail-pl1-f171.google.com with SMTP id k20so4070124pls.3 for ; Sat, 07 Dec 2019 10:21:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rajagiritech-edu-in.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=rYZBBRiANlnOnFi8ovHE2DcSrsXS2fMjDZoBxr32+zA=; b=LG7Q8Mzt++H1r7POjXW1vG6DbiR9S7FNET3iDS1KAXERZ+8citglJyzcXQkNyLneWv 5kTpn2FaJjjGICZ9n9Gc8K1c7xp+fSYlzglaXGvzNIwjg/LubEtKo1MUD7Id6GqkT3WV 5ElLslm4TU5iijSUOEhoO0aLC+ZXIg6ej7C4t+v8t7sq0ovx1zMuOOZVGjze/wbGc0Bo 61WjoZQrVMRt5O5ecSNcsvqnmUQ2ZgxwhnFWwFYVqBg/UbA4oaScGj2UUCn9+hsIhjbs rnbsjCxgqZRkhCcz2OU77jC+dFO3Dp8t9Hv7N11D2B2+4mfu99RO2n9f9qpe3yfEeY8g 7ZMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=rYZBBRiANlnOnFi8ovHE2DcSrsXS2fMjDZoBxr32+zA=; b=KoKKOpXlksgtRKCqi63fY4phIIjV/HOsj3QDxGUZKTaSBd6WLhJxve5BzNVQ7HQxX/ ej3uZEV7XaYDlWfXcPFAU3qj1irRohuqTSM4iKANWqJQqr11ZMYpFF+bRQhCfd0bhA38 22V16uzaCT7LYbSRIQf/YzX7UxXv9EX+CupDrHuWuIYyIwKieHXcF5Dzva1dxkgGJypt 4kFofSXlQATVbhfN6DuyfZQBZMQ4v6Moa3JW6YFn1ujMbNliBoHOZY0lTUiOkyQ0y6us xzD/a8uYzVQvdEsEgAyT8sskoV89G0/FTQWvrJbMRgpAqCwsR665Qi/dXRtJsKSV2j38 pjNg== X-Gm-Message-State: APjAAAXcv3MD3UhhcYzM+d2RMlDPZhb9in+3ixYKDdw0jweoWeLnqIID OzpAEmPR1TwEZv7PV6UFcrTyCvNIxuM= X-Google-Smtp-Source: APXvYqzlnpKdCEFNMwYy41hXu1QvTa2f2xrCR5pEJOV/WkRY/DzdFlPH7zeB1jU7XQ1eH3uElyOmjA== X-Received: by 2002:a17:90a:7bc3:: with SMTP id d3mr23367973pjl.86.1575742918122; Sat, 07 Dec 2019 10:21:58 -0800 (PST) Received: from debian ([122.164.203.149]) by smtp.gmail.com with ESMTPSA id r4sm6993968pji.11.2019.12.07.10.21.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Dec 2019 10:21:57 -0800 (PST) Date: Sat, 7 Dec 2019 23:51:52 +0530 From: Jeffrin Jose To: laurent.pinchart@ideasonboard.com, mchehab@kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PROBLEM] uvcvideo: Failed to query (GET_INFO) UVC control Message-ID: <20191207182152.GB5280@debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org hello, i get this output piece from "dmesg -l err" of kernel 5.4.2 -------------------x---------------------------x------------------ uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1). uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1). -------------------x----------------------------x----------------- Additional information: Linux debian 5.4.2 #17 SMP Sat Dec 7 01:39:12 IST 2019 x86_64 GNU/Linux Relevant file: drivers/media/usb/uvc/uvc_video.c -- software engineer rajagiri school of engineering and technology