From patchwork Tue Dec 22 23:04:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 11987389 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=-18.8 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, 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 6DD7DC433E9 for ; Tue, 22 Dec 2020 23:06:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 381972313C for ; Tue, 22 Dec 2020 23:06:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728183AbgLVXGR (ORCPT ); Tue, 22 Dec 2020 18:06:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728174AbgLVXGQ (ORCPT ); Tue, 22 Dec 2020 18:06:16 -0500 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 007B7C061257 for ; Tue, 22 Dec 2020 15:04:52 -0800 (PST) Received: by mail-wm1-x32b.google.com with SMTP id g185so4289154wmf.3 for ; Tue, 22 Dec 2020 15:04:52 -0800 (PST) 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=m9LiQmp6A+LTTu3zQYnmbld6q3Bvb29h+ctGjlsjaI4=; b=h42QGQcEOLwFqlJ4QIGSfB8H+469J1gSGnvlSsB03WcsPvx7Re3Liibhc8hGyo86Yu R1BYE00V7VaxEaYnjqjma3PUb5LCfqomtAAPrjJBG0zpeRpg602rBgAG4ociAUpHL231 aIyMnR3KbgsPAweivTji2138flXTLmqXw+Kg4= 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=m9LiQmp6A+LTTu3zQYnmbld6q3Bvb29h+ctGjlsjaI4=; b=F8lg56n0O/24weE6j3pSYUDfsFgEKziGwptqg16xvok1GWQEr7W5/Alqhv48ZE1PDG SbwJyu5j6n3Y2fGO2s5UsOEUEZva0EF8u984ZzHCL3ZpM/qDcP0MRxgs87nVcJ5+0Pbs 3MKxtP61/GzkwWPyH2PPwKIe+xN4v76OHuH5U8r23XR9emmWNxEoAwCdweI+iUYCALQL BlSayz/G9cMCKRkg4ZHR5QMlwjDgfMM86x/7ZYw49FJ/r0nX9b1HsE53dVbQo244q/ud zd/PzoL/9uKPi/+FpBowuQlGSXt2m/U/wrYWV8jEBiywpNKZTnuAC2nU1X52INX4Yp4I kUtg== X-Gm-Message-State: AOAM531M9hRwdAgBwhPrb2KmxOzGmDxFfJrrh7eEC3q1M00d5FlyzOyA 3mmXYMaPPY7beckTV/pNeJj0lQ== X-Google-Smtp-Source: ABdhPJwMAIoCKXCUvTx+0JIR6eCexiWnbYwTDcr44121x4FBymp1ehh5gDt9ba0QRsI/A9ypAz5Itw== X-Received: by 2002:a1c:4407:: with SMTP id r7mr300596wma.104.1608678291751; Tue, 22 Dec 2020 15:04:51 -0800 (PST) Received: from alco.lan ([80.71.134.83]) by smtp.gmail.com with ESMTPSA id r16sm34463401wrx.36.2020.12.22.15.04.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Dec 2020 15:04:51 -0800 (PST) From: Ricardo Ribalda To: Laurent Pinchart , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ricardo Ribalda Subject: [PATCH v6 04/11] media: uvcvideo: Add uvc_ctrl_status_event_direct Date: Wed, 23 Dec 2020 00:04:39 +0100 Message-Id: <20201222230446.1027916-5-ribalda@chromium.org> X-Mailer: git-send-email 2.29.2.729.g45daf8777d-goog In-Reply-To: <20201222230446.1027916-1-ribalda@chromium.org> References: <20201222230446.1027916-1-ribalda@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Provide a code path for events that can be sent without a work-queue, this is, that do not belong to an URB and are not handled in the top half on an irq-handled. Signed-off-by: Ricardo Ribalda --- drivers/media/usb/uvc/uvc_ctrl.c | 35 +++++++++++++++++++++++++++----- drivers/media/usb/uvc/uvcvideo.h | 2 ++ 2 files changed, 32 insertions(+), 5 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index 9f6174a10e73..5fe228a3213b 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -1254,17 +1254,14 @@ static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain, uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes); } -static void uvc_ctrl_status_event_work(struct work_struct *work) +static void __uvc_ctrl_status_event(struct uvc_device *dev, + struct uvc_ctrl_work *w) { - struct uvc_device *dev = container_of(work, struct uvc_device, - async_ctrl.work); - struct uvc_ctrl_work *w = &dev->async_ctrl; struct uvc_video_chain *chain = w->chain; struct uvc_control_mapping *mapping; struct uvc_control *ctrl = w->ctrl; struct uvc_fh *handle; unsigned int i; - int ret; mutex_lock(&chain->ctrl_mutex); @@ -1291,6 +1288,16 @@ static void uvc_ctrl_status_event_work(struct work_struct *work) } mutex_unlock(&chain->ctrl_mutex); +} + +static void uvc_ctrl_status_event_work(struct work_struct *work) +{ + struct uvc_device *dev = container_of(work, struct uvc_device, + async_ctrl.work); + struct uvc_ctrl_work *w = &dev->async_ctrl; + int ret; + + __uvc_ctrl_status_event(dev, w); /* Resubmit the URB. */ w->urb->interval = dev->int_ep->desc.bInterval; @@ -1321,6 +1328,24 @@ bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain, return true; } +void uvc_ctrl_status_event_direct(struct uvc_video_chain *chain, + struct uvc_control *ctrl, const u8 *data) +{ + struct uvc_device *dev = chain->dev; + struct uvc_ctrl_work w; + + if (list_empty(&ctrl->info.mappings)) { + ctrl->handle = NULL; + return; + } + + w.data = data; + w.chain = chain; + w.ctrl = ctrl; + + __uvc_ctrl_status_event(dev, &w); +} + static bool uvc_ctrl_xctrls_has_control(const struct v4l2_ext_control *xctrls, unsigned int xctrls_count, u32 id) { diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index c50b0546901f..d7954dcc2b60 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -845,6 +845,8 @@ void uvc_ctrl_cleanup_device(struct uvc_device *dev); int uvc_ctrl_restore_values(struct uvc_device *dev); bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain, struct uvc_control *ctrl, const u8 *data); +void uvc_ctrl_status_event_direct(struct uvc_video_chain *chain, + struct uvc_control *ctrl, const u8 *data); int uvc_ctrl_begin(struct uvc_video_chain *chain); int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,