From patchwork Sun Mar 8 14:40:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 28590 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1YUcSV-0000ln-CQ; Sun, 08 Mar 2015 15:45:35 +0100 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.72/mailfrontend-7) with esmtp id 1YUcST-0001Ba-1k; Sun, 08 Mar 2015 15:45:35 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752773AbbCHOlJ (ORCPT + 1 other); Sun, 8 Mar 2015 10:41:09 -0400 Received: from mail-we0-f175.google.com ([74.125.82.175]:39130 "EHLO mail-we0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751826AbbCHOlG (ORCPT ); Sun, 8 Mar 2015 10:41:06 -0400 Received: by wevl61 with SMTP id l61so3899136wev.6; Sun, 08 Mar 2015 07:41:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=gjA3BPQ/o1NpfNqMTuolPwD6IwQL4FesJPzwxnIhLzc=; b=n32r0Cjt5tFDMwcvwlUh8Ma8uG+0ogzJjTgPJz19TqEihSlRor7G5wD1TOffjpXnn8 Z8ktP028acz9o7uMvv0jnt4nsxtP4/qvDTxOui5Q0J+n3CLEVnXxTsI0RfjFpqd9o5Rz P1a1Ay/1UxIbYqk3Cdz8jLjEg6h3+hf21toTkYL5maA4Nro/ati1V0xvZU2udgjfS3Um S6tItjIJVuNmWzUovmiE5gFPVzP8WuNcQ8pSAJX89oj3Qs65Tycukv4WBGYYx3eppHN5 Zy32CGRdisRR/y+wOB12z00Hw7eLiJdeD13RFgcgyQMqsdM4uj6/iY07XcS8IW8Qk7pn tF1g== X-Received: by 10.194.219.169 with SMTP id pp9mr2025237wjc.143.1425825664928; Sun, 08 Mar 2015 07:41:04 -0700 (PDT) Received: from tango-charlie.Home (0545247b.skybroadband.com. [5.69.36.123]) by mx.google.com with ESMTPSA id ka1sm24040321wjc.2.2015.03.08.07.41.03 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 08 Mar 2015 07:41:04 -0700 (PDT) From: Lad Prabhakar To: Scott Jiang , linux-media@vger.kernel.org, Hans Verkuil Cc: adi-buildroot-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, "Lad, Prabhakar" Subject: [PATCH v4 03/17] media: blackfin: bfin_capture: set min_buffers_needed Date: Sun, 8 Mar 2015 14:40:39 +0000 Message-Id: <1425825653-14768-4-git-send-email-prabhakar.csengg@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1425825653-14768-1-git-send-email-prabhakar.csengg@gmail.com> References: <1425825653-14768-1-git-send-email-prabhakar.csengg@gmail.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.3.8.143619 X-PMX-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' FORGED_FROM_GMAIL 0.1, MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1200_1299 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, DKIM_SIGNATURE 0, REFERENCES 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __FRAUD_BODY_WEBMAIL 0, __FRAUD_WEBMAIL 0, __FRAUD_WEBMAIL_FROM 0, __FROM_GMAIL 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __PHISH_SPEAR_STRUCTURE_1 0, __REFERENCES 0, __SANE_MSGID 0, __TO_MALFORMED_2 0, __URI_NO_WWW 0, __URI_NS , __YOUTUBE_RCVD 0' From: "Lad, Prabhakar" this patch sets the min_buffers_needed field of the vb2 queue so that the vb2 core will make sure start_streaming() callback is called only when we have minimum buffers queued. Signed-off-by: Lad, Prabhakar Acked-by: Scott Jiang Tested-by: Scott Jiang --- drivers/media/platform/blackfin/bfin_capture.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/blackfin/bfin_capture.c b/drivers/media/platform/blackfin/bfin_capture.c index 2c720bc..332f8c9 100644 --- a/drivers/media/platform/blackfin/bfin_capture.c +++ b/drivers/media/platform/blackfin/bfin_capture.c @@ -986,6 +986,7 @@ static int bcap_probe(struct platform_device *pdev) q->mem_ops = &vb2_dma_contig_memops; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->lock = &bcap_dev->mutex; + q->min_buffers_needed = 1; ret = vb2_queue_init(q); if (ret)