From patchwork Tue Sep 20 14:11:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 608137 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B944BECAAD8 for ; Tue, 20 Sep 2022 14:14:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229871AbiITOOE (ORCPT ); Tue, 20 Sep 2022 10:14:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231503AbiITONM (ORCPT ); Tue, 20 Sep 2022 10:13:12 -0400 Received: from mail-ej1-x62d.google.com (mail-ej1-x62d.google.com [IPv6:2a00:1450:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 625342CC87 for ; Tue, 20 Sep 2022 07:11:24 -0700 (PDT) Received: by mail-ej1-x62d.google.com with SMTP id a26so6508000ejc.4 for ; Tue, 20 Sep 2022 07:11:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date; bh=fZx/rWrR7bth2k3zX90922HeFwXDXF4+XRCwzM0uxDU=; b=hNs3RX9xQGVD65f7QO8VzrP4znwu+FGcrbo6ocv7O/05gKBZ1wH41NfT1tMoB9JKK+ fCnEJGtdMDBVBXb1GRcqA66h+89xj3KHTLcreDEUobgVWQilew9i+jzjGMKG1tG/c+ds QX40CW1oeB2mxfZTxSz0tD36imknHdZUK16b0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date; bh=fZx/rWrR7bth2k3zX90922HeFwXDXF4+XRCwzM0uxDU=; b=nDZSelDQSxatjwo5M3dAw8LYHmc1K1vpGWfW+/4Se2hGH6LNWxEH9mIDF27SbChfs+ jFThOuTXFhqY7EpsqzOa2jBZfuqPZP1oNeCcB5cm2fYHftGaf86qbzjI8UXwLRyyscbg JPon8PyQdDWrSs2ZuF4Rm25CDk5aGhFOVuILl4JKdnKWBD85Cb3cQZCyq+us2TOB/tWm 7nAlmkc/3VMdNIhkfsrECRV8VXFjKXbiJF3wC724qDtooEpg9TofVwq2mCTejcfyAx0f HoD9dnhoMED4X/vijCaMTjQwhgNPrOVvuUmVy19MULpZ4Gxckp9lLB4jPDSYNsZaWnFc vjOA== X-Gm-Message-State: ACrzQf3gtJX7dzB+mXHAI34WyUOaPLirzKWjPzXds7uWNIyO98kszW5S U3EfogdfV/vSchVegW8YIj0cQ+67/5qlvPAvK6E= X-Google-Smtp-Source: AMsMyM49va1rmcsPaDlAugeRoY+PzfADCzIDSwOMykHAqiCqO0+W2W/625FQvzvQ7U8cpRoUv2xFOQ== X-Received: by 2002:a17:906:8a6b:b0:780:ab37:b63 with SMTP id hy11-20020a1709068a6b00b00780ab370b63mr15122776ejc.365.1663683082739; Tue, 20 Sep 2022 07:11:22 -0700 (PDT) Received: from alco.roam.corp.google.com ([2620:0:1059:10:935d:52b0:7461:88e1]) by smtp.gmail.com with ESMTPSA id b24-20020aa7c918000000b004518ee90b4dsm129668edt.1.2022.09.20.07.11.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Sep 2022 07:11:21 -0700 (PDT) From: Ricardo Ribalda Date: Tue, 20 Sep 2022 16:11:06 +0200 Subject: [PATCH v1 3/5] media: uvcvideo: Return -EACCES for Wrong state error MIME-Version: 1.0 Message-Id: <20220920-resend-v4l2-compliance-v1-3-81364c15229b@chromium.org> References: <20220920-resend-v4l2-compliance-v1-0-81364c15229b@chromium.org> In-Reply-To: <20220920-resend-v4l2-compliance-v1-0-81364c15229b@chromium.org> To: Mauro Carvalho Chehab , Laurent Pinchart Cc: Hans Verkuil , Ricardo Ribalda , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.11.0-dev-d93f8 X-Developer-Signature: v=1; a=openpgp-sha256; l=854; i=ribalda@chromium.org; h=from:subject:message-id; bh=l3Tve8hGJ5W5tTbag9O5QNFnAI00qvVi1fN45JRNTAM=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBjKcn/J5h+0gj3RkVXT+F2wF6DERtyqXPbiyyPS7Lq 01rqx+2JAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCYynJ/wAKCRDRN9E+zzrEiHQTD/ 9ZBbIC//geY3g3ywDr6Lg3j0lkU5m5cFuiwGpZL3bDLnUZKL3tB9cmqFZQ/7+/DdRcS1r4tAb0rsWq 1XHhHIc+sM7TEzcdm57ZzhYfopuV/68vfB6OJCwS92xPqfL162Ra/Hw75GVS0MNrF+xX6US6MnnUYX BD8XtqNgRvMb878fj3jVT1cpI7wqY5wYEGOh5hg672qjO5lnXBiJJDNJ9dFxA5Y32sqBqPdjde+d4x 317Wit7YVtGnscLOwtnJquHVHK1mlclPv17aZXGiT5ja23aONAmSilXyZ9gIq1SSYOD5b9mLl7/Fx9 B49LiMIqk/Bu0pgLxrfG7lWNJDpjwoosiCKyMjwDemlX4IH2xutfvtoJbE9C5X1FnR0Z/k5WgLXG1n Gi/qwNnme0/qaxzH8LtckCv03PgDdT8F0Z7hCXHH/kHIlkbJxfbz4PYloO0xVKyrAzB/28t90eylny xX7q5sDFzaEGFATiPrPHgxRbMNG5JO9BadznggBkBEHsPqMEfPVvAkOTNxyyKxLpg1dKVluB+dgUDw b6BPlBIUw9vE5vdRn2Soq7bVPLR+DffaYnFgF75zjjWTZrurbo2BKwvRjxJkfLQKfmbmYC7FD6JrvK sorGg3tmm1lsqmx2Eqki3JvDotU44SzDJgR9u6d61m2hvOpy7ypTvYvG/CEw== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org For error 2 (Wrong state) return -EACCES instead of -EILSEQ. EACCES is a much more appropriate error code. EILSEQ will return "Invalid or incomplete multibyte or wide character." in strerror(), which is a *very* confusing message. Suggested-by: Hans Verkuil Signed-off-by: Ricardo Ribalda diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 2cf7f692c0bb..497073a50194 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -108,7 +108,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit, case 1: /* Not ready */ return -EBUSY; case 2: /* Wrong state */ - return -EILSEQ; + return -EACCES; case 3: /* Power */ return -EREMOTE; case 4: /* Out of range */