From patchwork Fri Jan 22 00:57:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 8086301 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-renesas-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id CA656BEEE5 for ; Fri, 22 Jan 2016 00:57:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 394CD2041E for ; Fri, 22 Jan 2016 00:57:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8EE312034C for ; Fri, 22 Jan 2016 00:57:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751449AbcAVA5s (ORCPT ); Thu, 21 Jan 2016 19:57:48 -0500 Received: from galahad.ideasonboard.com ([185.26.127.97]:58724 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751113AbcAVA5s (ORCPT ); Thu, 21 Jan 2016 19:57:48 -0500 Received: from avalon.access.network (nblzone-211-213.nblnetworks.fi [83.145.211.213]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id 0459F2005A for ; Fri, 22 Jan 2016 01:56:42 +0100 (CET) From: Laurent Pinchart To: linux-renesas-soc@vger.kernel.org Subject: [PATCH/RFC v2 36/56] vb2: Add helper function to check for request buffers Date: Fri, 22 Jan 2016 02:57:05 +0200 Message-Id: <1453424245-18782-37-git-send-email-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.4.10 In-Reply-To: <1453424245-18782-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1453424245-18782-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The vb2_queue_has_request() function will check whether a buffer has been prepared for the given request ID. Signed-off-by: Laurent Pinchart --- drivers/media/v4l2-core/videobuf2-v4l2.c | 17 +++++++++++++++++ include/media/videobuf2-v4l2.h | 3 +++ 2 files changed, 20 insertions(+) diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c index af8ce4dec6d8..be0c0ff06979 100644 --- a/drivers/media/v4l2-core/videobuf2-v4l2.c +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c @@ -791,6 +791,23 @@ void vb2_queue_release(struct vb2_queue *q) } EXPORT_SYMBOL_GPL(vb2_queue_release); +bool vb2_queue_has_request(struct vb2_queue *q, unsigned int request) +{ + unsigned int i; + + for (i = 0; i < q->num_buffers; i++) { + struct vb2_buffer *vb = q->bufs[i]; + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + + if (vb->state == VB2_BUF_STATE_PREPARED && + vbuf->request == request) + return true; + } + + return false; +} +EXPORT_SYMBOL_GPL(vb2_queue_has_request); + /** * vb2_poll() - implements poll userspace operation * @q: videobuf2 queue diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h index b1ee91c7e1f2..0c5e47919607 100644 --- a/include/media/videobuf2-v4l2.h +++ b/include/media/videobuf2-v4l2.h @@ -65,6 +65,9 @@ int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type); int __must_check vb2_queue_init(struct vb2_queue *q); void vb2_queue_release(struct vb2_queue *q); + +bool vb2_queue_has_request(struct vb2_queue *q, unsigned int request); + unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait);