From patchwork Fri May 6 10:53:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 9031721 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 64B459F30C for ; Fri, 6 May 2016 10:56:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B378D20382 for ; Fri, 6 May 2016 10:56:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3F582037F for ; Fri, 6 May 2016 10:56:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758266AbcEFK4o (ORCPT ); Fri, 6 May 2016 06:56:44 -0400 Received: from mga01.intel.com ([192.55.52.88]:63881 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758112AbcEFK4l (ORCPT ); Fri, 6 May 2016 06:56:41 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 06 May 2016 03:56:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,586,1455004800"; d="scan'208";a="960167198" Received: from paasikivi.fi.intel.com ([10.237.72.42]) by fmsmga001.fm.intel.com with ESMTP; 06 May 2016 03:56:40 -0700 Received: from nauris.fi.intel.com (nauris.localdomain [192.168.240.2]) by paasikivi.fi.intel.com (Postfix) with ESMTP id 0619A20E57; Fri, 6 May 2016 13:56:36 +0300 (EEST) Received: by nauris.fi.intel.com (Postfix, from userid 1000) id 3D3E320168; Fri, 6 May 2016 13:53:37 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, hverkuil@xs4all.nl, mchehab@osg.samsung.com, Laurent Pinchart Subject: [RFC 13/22] vb2: Add helper function to check for request buffers Date: Fri, 6 May 2016 13:53:22 +0300 Message-Id: <1462532011-15527-14-git-send-email-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1462532011-15527-1-git-send-email-sakari.ailus@linux.intel.com> References: <1462532011-15527-1-git-send-email-sakari.ailus@linux.intel.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 From: Laurent Pinchart 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 | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c index bb135fc..6c1c4bf 100644 --- a/drivers/media/v4l2-core/videobuf2-v4l2.c +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c @@ -790,6 +790,23 @@ 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 b1ee91c..7727c52 100644 --- a/include/media/videobuf2-v4l2.h +++ b/include/media/videobuf2-v4l2.h @@ -68,6 +68,8 @@ void vb2_queue_release(struct vb2_queue *q); unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait); +bool vb2_queue_has_request(struct vb2_queue *q, unsigned int request); + /* * The following functions are not part of the vb2 core API, but are simple * helper functions that you can use in your struct v4l2_file_operations,