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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 4E89CC433C1 for ; Fri, 19 Mar 2021 17:10:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A3CF61960 for ; Fri, 19 Mar 2021 17:10:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231153AbhCSRKB (ORCPT ); Fri, 19 Mar 2021 13:10:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230118AbhCSRJW (ORCPT ); Fri, 19 Mar 2021 13:09:22 -0400 Received: from mail-ed1-x52c.google.com (mail-ed1-x52c.google.com [IPv6:2a00:1450:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADD9FC06174A for ; Fri, 19 Mar 2021 10:09:21 -0700 (PDT) Received: by mail-ed1-x52c.google.com with SMTP id h10so11588950edt.13 for ; Fri, 19 Mar 2021 10:09:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OM70Sjufw9liS/WZuFn+FLp3ilPmUVIY/XUIceYCgdU=; b=CBpA/lDGZ3VzTelGK7YlkXFJLs+F8HRMCbYAYlWGeC6PAI74vtSwTPVHNhyxJ3KS6w Kvq6M5oJ8XgGMaKAPh+oEBfTiEiWT1OjCCjPPWuyJcEr9XtMk3c8hyEgGccV32bZ6Vho /7LQOU1I7X4N2tm/Thy4MS0HaZAQ/UDBTLUJA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OM70Sjufw9liS/WZuFn+FLp3ilPmUVIY/XUIceYCgdU=; b=oraE5gWLicwtyuGiqgJ4mGO56DYJCCk0Y0OCDYDCdpoAeIu0gluwu+E8YKCCwNnEqd gchb9MeEN9nNbG7NDZIzpC5cFRrdigUEloHbbAbSwb1CW7Zr5iJ0TQUZ6aRS7ebBafDA O/7k6KO/1IXaiNggriYaK0mAIfhihGdytx0l7xtYwqT5ajXjRVoaqR4jL+f7rK/Bcu5g yEOQ8LummvvNh0tFXeU7Ou3e7FawGSJExM9pVWiwgjb+qFjtiBf15hIhbwDOLHQKvFrn Xl2Ddelgq10zbCLnfEpprMFqKdoV2FfLlvmwlBfY9oQscdyObl1fCqT4LL4hUKLh/xdQ ndnA== X-Gm-Message-State: AOAM5338mkSl8ZQrERGVpsQPv+gSyBOtjttu2uzIKYQzPId0DvBNVrGQ uELfYKR8/LSkohacndC2NFY2uXZK5fLjaE3NHd4= X-Google-Smtp-Source: ABdhPJwRVMxgrrCcm8GLRDNxovDHO4U4hn0Y3Jp6+6plwIZwnmnSYRyP3qtxqoV+AHXKnnbUlPoefw== X-Received: by 2002:aa7:d917:: with SMTP id a23mr10799328edr.122.1616173760494; Fri, 19 Mar 2021 10:09:20 -0700 (PDT) Received: from alco.lan ([80.71.134.83]) by smtp.gmail.com with ESMTPSA id be27sm4506050edb.47.2021.03.19.10.09.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Mar 2021 10:09:20 -0700 (PDT) From: Ricardo Ribalda To: Laurent Pinchart , Mauro Carvalho Chehab , Hans Verkuil , Sergey Senozhatsky , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, tfiga@chromium.org Cc: Ricardo Ribalda Subject: [PATCH v8 15/19] media: uvcvideo: Set error_idx during ctrl_commit errors Date: Fri, 19 Mar 2021 18:09:02 +0100 Message-Id: <20210319170906.278238-16-ribalda@chromium.org> X-Mailer: git-send-email 2.31.0.rc2.261.g7f71774620-goog In-Reply-To: <20210319170906.278238-1-ribalda@chromium.org> References: <20210319170906.278238-1-ribalda@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If we have an error setting a control, return the affected control in the error_idx field. Signed-off-by: Ricardo Ribalda --- drivers/media/usb/uvc/uvc_ctrl.c | 42 ++++++++++++++++++++++++++------ drivers/media/usb/uvc/uvc_v4l2.c | 2 +- drivers/media/usb/uvc/uvcvideo.h | 10 +++----- 3 files changed, 40 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index 24fd5afc4e4f..bcebf9d1a46f 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -1586,7 +1586,7 @@ int uvc_ctrl_begin(struct uvc_video_chain *chain) } static int uvc_ctrl_commit_entity(struct uvc_device *dev, - struct uvc_entity *entity, int rollback) + struct uvc_entity *entity, int rollback, struct uvc_control **err_ctrl) { struct uvc_control *ctrl; unsigned int i; @@ -1628,31 +1628,59 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev, ctrl->dirty = 0; - if (ret < 0) + if (ret < 0) { + if (err_ctrl) + *err_ctrl = ctrl; return ret; + } } return 0; } +static int uvc_ctrl_find_ctrlidx(struct uvc_entity *entity, + struct v4l2_ext_controls *ctrls, + struct uvc_control *uvc_control) +{ + struct uvc_control_mapping *mapping; + struct uvc_control *ctrl_found; + unsigned int i; + + if (!entity) + return ctrls->count; + + for (i = 0; i < ctrls->count; i++) { + __uvc_find_control(entity, ctrls->controls[i].id, &mapping, + &ctrl_found, 0); + if (uvc_control == ctrl_found) + return i; + } + + return ctrls->count; +} + int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback, - const struct v4l2_ext_control *xctrls, - unsigned int xctrls_count) + struct v4l2_ext_controls *ctrls) { struct uvc_video_chain *chain = handle->chain; + struct uvc_control *err_ctrl; struct uvc_entity *entity; int ret = 0; /* Find the control. */ list_for_each_entry(entity, &chain->entities, chain) { - ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback); + ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback, + &err_ctrl); if (ret < 0) goto done; } if (!rollback) - uvc_ctrl_send_events(handle, xctrls, xctrls_count); + uvc_ctrl_send_events(handle, ctrls->controls, ctrls->count); done: + if (ret < 0 && ctrls) + ctrls->error_idx = uvc_ctrl_find_ctrlidx(entity, ctrls, + err_ctrl); mutex_unlock(&chain->ctrl_mutex); return ret; } @@ -2110,7 +2138,7 @@ int uvc_ctrl_restore_values(struct uvc_device *dev) ctrl->dirty = 1; } - ret = uvc_ctrl_commit_entity(dev, entity, 0); + ret = uvc_ctrl_commit_entity(dev, entity, 0, NULL); if (ret < 0) return ret; } diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index a3ee1dc003fc..8d8b12a4db34 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1088,7 +1088,7 @@ static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh *handle, ctrls->error_idx = 0; if (ioctl == VIDIOC_S_EXT_CTRLS) - return uvc_ctrl_commit(handle, ctrls->controls, ctrls->count); + return uvc_ctrl_commit(handle, ctrls); else return uvc_ctrl_rollback(handle); } diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 9471c342a310..0313b30f0cea 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -887,17 +887,15 @@ void uvc_ctrl_status_event(struct uvc_video_chain *chain, int uvc_ctrl_begin(struct uvc_video_chain *chain); int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback, - const struct v4l2_ext_control *xctrls, - unsigned int xctrls_count); + struct v4l2_ext_controls *ctrls); static inline int uvc_ctrl_commit(struct uvc_fh *handle, - const struct v4l2_ext_control *xctrls, - unsigned int xctrls_count) + struct v4l2_ext_controls *ctrls) { - return __uvc_ctrl_commit(handle, 0, xctrls, xctrls_count); + return __uvc_ctrl_commit(handle, 0, ctrls); } static inline int uvc_ctrl_rollback(struct uvc_fh *handle) { - return __uvc_ctrl_commit(handle, 1, NULL, 0); + return __uvc_ctrl_commit(handle, 1, NULL); } int uvc_ctrl_get(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl); -- 2.31.0.rc2.261.g7f71774620-goog