From patchwork Sun Dec 6 23:53:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 339360 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,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 01042C433FE for ; Sun, 6 Dec 2020 23:57:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB239208E4 for ; Sun, 6 Dec 2020 23:57:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728692AbgLFX5k (ORCPT ); Sun, 6 Dec 2020 18:57:40 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:60444 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728669AbgLFX5k (ORCPT ); Sun, 6 Dec 2020 18:57:40 -0500 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id F29E41895; Mon, 7 Dec 2020 00:54:07 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1607298848; bh=6p6bHzeFwKIVdDFMLZpNXKtMULAyn2veORJvtdVE5pY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FUyeVxErcUbzCC686YtMz3619FKItW/nanLodKJLlgY3ZRwdWchubu+D/Jst4YM/F 9OjgNMJl7utl/jID8/UtRw+zR2IeuJ5z1vexCDva8xjVz5F5P/NX7h6hLxzCcfE75v yjPdbzd7gVUxWJ4ADs+zGlUr5AESN8pWJqPy2Y6I= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Tomi Valkeinen , Benoit Parrot Subject: [PATCH v3 18/24] media: ti-vpe: cal: Remove DMA queue empty check at start streaming time Date: Mon, 7 Dec 2020 01:53:47 +0200 Message-Id: <20201206235353.26968-19-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201206235353.26968-1-laurent.pinchart@ideasonboard.com> References: <20201206235353.26968-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The vb2 queue ensures that the start streaming operation will only be called with a minimal number of buffers queued to the driver. There's thus no need to manually check if the DMA queue is empty. Remove the check. Signed-off-by: Laurent Pinchart Reviewed-by: Benoit Parrot --- drivers/media/platform/ti-vpe/cal-video.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/media/platform/ti-vpe/cal-video.c b/drivers/media/platform/ti-vpe/cal-video.c index ad1e85189831..bfc3ba4a96af 100644 --- a/drivers/media/platform/ti-vpe/cal-video.c +++ b/drivers/media/platform/ti-vpe/cal-video.c @@ -511,12 +511,6 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count) int ret; spin_lock_irq(&ctx->slock); - if (list_empty(&dma_q->active)) { - spin_unlock_irq(&ctx->slock); - ctx_dbg(3, ctx, "buffer queue is empty\n"); - return -EIO; - } - buf = list_entry(dma_q->active.next, struct cal_buffer, list); ctx->cur_frm = buf; ctx->next_frm = buf;