From patchwork Thu Sep 19 20:41:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Parrot X-Patchwork-Id: 11153299 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A6C7C15E6 for ; Thu, 19 Sep 2019 20:40:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85BEB21D56 for ; Thu, 19 Sep 2019 20:40:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="Q6Hr9+sH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392712AbfISUj3 (ORCPT ); Thu, 19 Sep 2019 16:39:29 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:47450 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392703AbfISUj2 (ORCPT ); Thu, 19 Sep 2019 16:39:28 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JKdRac117319; Thu, 19 Sep 2019 15:39:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568925567; bh=SnHHVBGUrd5TNBEfAg227GGjiJBRYEdc3yNRTaL6AMY=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=Q6Hr9+sH/c4rVKzs1BuPF/oQTd7lfSecCFaT+TTjQX6P8XyKuF597greWvTwyZxO/ tY7kQP/WDB1NLGWYw052m7i7eKLrlug1ba+dqKSMHLnHG3H4iBcEJJAZ8zz+Hz76ig 3eTEi1VeQBdhjVCZ69ajr5CQDPohiBe9WNJTqoGw= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JKdR4m122829; Thu, 19 Sep 2019 15:39:27 -0500 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 15:39:23 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 15:39:22 -0500 Received: from uda0869644b.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JKdKIZ014276; Thu, 19 Sep 2019 15:39:26 -0500 From: Benoit Parrot To: Hans Verkuil CC: Prabhakar Lad , , , , Benoit Parrot Subject: [Patch v2 06/13] media: am437x-vpfe: Streamlined vb2 buffer cleanup Date: Thu, 19 Sep 2019 15:41:18 -0500 Message-ID: <20190919204125.15254-7-bparrot@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190919204125.15254-1-bparrot@ti.com> References: <20190919204125.15254-1-bparrot@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Returning queued vb2 buffers back to user space is a common task best handled by a helper function. Signed-off-by: Benoit Parrot --- drivers/media/platform/am437x/am437x-vpfe.c | 53 ++++++++++----------- 1 file changed, 25 insertions(+), 28 deletions(-) diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c index e0a4c8920df8..03415c179c85 100644 --- a/drivers/media/platform/am437x/am437x-vpfe.c +++ b/drivers/media/platform/am437x/am437x-vpfe.c @@ -1949,6 +1949,29 @@ static void vpfe_buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); } +static void vpfe_return_all_buffers(struct vpfe_device *vpfe, + enum vb2_buffer_state state) +{ + struct vpfe_cap_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); + list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + + if (vpfe->cur_frm) + vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state); + + if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm) + vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state); + + vpfe->cur_frm = NULL; + vpfe->next_frm = NULL; + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); +} + /* * vpfe_start_streaming : Starts the DMA engine for streaming * @vb: ptr to vb2_buffer @@ -1957,7 +1980,6 @@ static void vpfe_buffer_queue(struct vb2_buffer *vb) static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); - struct vpfe_cap_buffer *buf, *tmp; struct vpfe_subdev_info *sdinfo; unsigned long flags; unsigned long addr; @@ -2003,11 +2025,7 @@ static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) return 0; err: - list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) { - list_del(&buf->list); - vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); - } - + vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED); vpfe_pcr_enable(&vpfe->ccdc, 0); return ret; } @@ -2023,7 +2041,6 @@ static void vpfe_stop_streaming(struct vb2_queue *vq) { struct vpfe_device *vpfe = vb2_get_drv_priv(vq); struct vpfe_subdev_info *sdinfo; - unsigned long flags; int ret; vpfe_pcr_enable(&vpfe->ccdc, 0); @@ -2041,27 +2058,7 @@ static void vpfe_stop_streaming(struct vb2_queue *vq) vpfe_dbg(1, vpfe, "stream off failed in subdev\n"); /* release all active buffers */ - spin_lock_irqsave(&vpfe->dma_queue_lock, flags); - if (vpfe->cur_frm == vpfe->next_frm) { - vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } else { - if (vpfe->cur_frm != NULL) - vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - if (vpfe->next_frm != NULL) - vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } - - while (!list_empty(&vpfe->dma_queue)) { - vpfe->next_frm = list_entry(vpfe->dma_queue.next, - struct vpfe_cap_buffer, list); - list_del(&vpfe->next_frm->list); - vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } - spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); + vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR); } static int vpfe_g_pixelaspect(struct file *file, void *priv,