From patchwork Thu Mar 31 19:37:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 12797621 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2FEAC433EF for ; Thu, 31 Mar 2022 19:37:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240795AbiCaTjc (ORCPT ); Thu, 31 Mar 2022 15:39:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44518 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240780AbiCaTj2 (ORCPT ); Thu, 31 Mar 2022 15:39:28 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE4351F160C; Thu, 31 Mar 2022 12:37:37 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nicolas) with ESMTPSA id E0A2B1F4724B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1648755456; bh=RzISFmgzdgSdtW0+/gjxICIzsCqQWUTem2X0Qdl07rI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P8JxZJhCDdx9Qxk6/3g0ArBQAL6zq/4nDv4o4se2D/r8x9FqDSTG1Gmclg/ipJvOd QVlZiS09IZSS6knovbP88HF2IV7HrZE1F3rhavI2rX4E0451TzvLMBrUwygzg1GjGI irNuFE3v7ose8uwUbKL2ZQSLKbjzcElTY/HxaeP2BDXzjK85i+gTlt8+YOVA47lGj6 7d+S7kJOkvLXM5m7rWGukhvKJ9TAGX/mCC6sFzvZCD+1PsYD2j/I2gdHM/oH4ueAsy aKVOeo7LNLz2HOR4LEw51uhN5GKXsZa77yUZ14AZ1Bgg11PvsIE/kVhKqYEApsz9Cg DE6LjQf5fnoCw== From: Nicolas Dufresne To: Mauro Carvalho Chehab Cc: kernel@collabora.com, Sebastian Fricke , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 02/23] media: v4l2-mem2mem: Trace on implicit un-hold Date: Thu, 31 Mar 2022 15:37:04 -0400 Message-Id: <20220331193726.289559-3-nicolas.dufresne@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220331193726.289559-1-nicolas.dufresne@collabora.com> References: <20220331193726.289559-1-nicolas.dufresne@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org If the timestamp of the src buffer differs from the timestamp of a held dst buffer, the held buffer is implicitly removed and marked as done. Add a trace to help debugging if someone hits that case. Signed-off-by: Nicolas Dufresne Reviewed-by: Sebastian Fricke Reviewed-by: Ezequiel Garcia --- drivers/media/v4l2-core/v4l2-mem2mem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 675e22895ebe..fbcd79763e8f 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -336,6 +336,7 @@ static void __v4l2_m2m_try_queue(struct v4l2_m2m_dev *m2m_dev, if (src && dst && dst->is_held && dst->vb2_buf.copied_timestamp && dst->vb2_buf.timestamp != src->vb2_buf.timestamp) { + dprintk("src and dst timestamp mismatch, removing held capture buffer.\n"); dst->is_held = false; v4l2_m2m_dst_buf_remove(m2m_ctx); v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);