From patchwork Mon Nov 5 15:25:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 10668463 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6CE0115A6 for ; Mon, 5 Nov 2018 15:25:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C8DA28458 for ; Mon, 5 Nov 2018 15:25:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50E2B285DA; Mon, 5 Nov 2018 15:25:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3D8C28458 for ; Mon, 5 Nov 2018 15:25:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729871AbeKFApn (ORCPT ); Mon, 5 Nov 2018 19:45:43 -0500 Received: from metis.ext.pengutronix.de ([85.220.165.71]:59845 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729929AbeKFApj (ORCPT ); Mon, 5 Nov 2018 19:45:39 -0500 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7] helo=dude.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.89) (envelope-from ) id 1gJgkn-0002Xf-LN; Mon, 05 Nov 2018 16:25:25 +0100 From: Philipp Zabel To: linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab , Hans Verkuil , kernel@pengutronix.de Subject: [PATCH 07/15] media: coda: don't disable IRQs across buffer meta handling Date: Mon, 5 Nov 2018 16:25:05 +0100 Message-Id: <20181105152513.26345-7-p.zabel@pengutronix.de> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181105152513.26345-1-p.zabel@pengutronix.de> References: <20181105152513.26345-1-p.zabel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Lucas Stach The CODA driver uses threaded IRQs only, so there is nothing happening in hardirq context that could interfere with the buffer meta handling. Signed-off-by: Lucas Stach Signed-off-by: Philipp Zabel --- drivers/media/platform/coda/coda-bit.c | 19 +++++++------------ drivers/media/platform/coda/coda-common.c | 5 ++--- 2 files changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index ee9d2a402ccd..348b17140715 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -253,7 +253,6 @@ void coda_fill_bitstream(struct coda_ctx *ctx, struct list_head *buffer_list) { struct vb2_v4l2_buffer *src_buf; struct coda_buffer_meta *meta; - unsigned long flags; u32 start; if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) @@ -332,13 +331,11 @@ void coda_fill_bitstream(struct coda_ctx *ctx, struct list_head *buffer_list) meta->timestamp = src_buf->vb2_buf.timestamp; meta->start = start; meta->end = ctx->bitstream_fifo.kfifo.in; - spin_lock_irqsave(&ctx->buffer_meta_lock, - flags); + spin_lock(&ctx->buffer_meta_lock); list_add_tail(&meta->list, &ctx->buffer_meta_list); ctx->num_metas++; - spin_unlock_irqrestore(&ctx->buffer_meta_lock, - flags); + spin_unlock(&ctx->buffer_meta_lock); trace_coda_bit_queue(ctx, src_buf, meta); } @@ -1894,7 +1891,6 @@ static int coda_prepare_decode(struct coda_ctx *ctx) struct coda_dev *dev = ctx->dev; struct coda_q_data *q_data_dst; struct coda_buffer_meta *meta; - unsigned long flags; u32 rot_mode = 0; u32 reg_addr, reg_stride; @@ -1988,7 +1984,7 @@ static int coda_prepare_decode(struct coda_ctx *ctx) coda_write(dev, ctx->iram_info.axi_sram_use, CODA7_REG_BIT_AXI_SRAM_USE); - spin_lock_irqsave(&ctx->buffer_meta_lock, flags); + spin_lock(&ctx->buffer_meta_lock); meta = list_first_entry_or_null(&ctx->buffer_meta_list, struct coda_buffer_meta, list); @@ -2007,7 +2003,7 @@ static int coda_prepare_decode(struct coda_ctx *ctx) kfifo_in(&ctx->bitstream_fifo, buf, pad); } } - spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags); + spin_unlock(&ctx->buffer_meta_lock); coda_kfifo_sync_to_device_full(ctx); @@ -2029,7 +2025,6 @@ static void coda_finish_decode(struct coda_ctx *ctx) struct vb2_v4l2_buffer *dst_buf; struct coda_buffer_meta *meta; unsigned long payload; - unsigned long flags; int width, height; int decoded_idx; int display_idx; @@ -2161,13 +2156,13 @@ static void coda_finish_decode(struct coda_ctx *ctx) } else { val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1; val -= ctx->sequence_offset; - spin_lock_irqsave(&ctx->buffer_meta_lock, flags); + spin_lock(&ctx->buffer_meta_lock); if (!list_empty(&ctx->buffer_meta_list)) { meta = list_first_entry(&ctx->buffer_meta_list, struct coda_buffer_meta, list); list_del(&meta->list); ctx->num_metas--; - spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags); + spin_unlock(&ctx->buffer_meta_lock); /* * Clamp counters to 16 bits for comparison, as the HW * counter rolls over at this point for h.264. This @@ -2184,7 +2179,7 @@ static void coda_finish_decode(struct coda_ctx *ctx) ctx->frame_metas[decoded_idx] = *meta; kfree(meta); } else { - spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags); + spin_unlock(&ctx->buffer_meta_lock); v4l2_err(&dev->v4l2_dev, "empty timestamp list!\n"); memset(&ctx->frame_metas[decoded_idx], 0, sizeof(struct coda_buffer_meta)); diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c index 54b7344231c0..60b866160094 100644 --- a/drivers/media/platform/coda/coda-common.c +++ b/drivers/media/platform/coda/coda-common.c @@ -1689,7 +1689,6 @@ static void coda_stop_streaming(struct vb2_queue *q) struct coda_ctx *ctx = vb2_get_drv_priv(q); struct coda_dev *dev = ctx->dev; struct vb2_v4l2_buffer *buf; - unsigned long flags; bool stop; stop = ctx->streamon_out && ctx->streamon_cap; @@ -1724,7 +1723,7 @@ static void coda_stop_streaming(struct vb2_queue *q) queue_work(dev->workqueue, &ctx->seq_end_work); flush_work(&ctx->seq_end_work); } - spin_lock_irqsave(&ctx->buffer_meta_lock, flags); + spin_lock(&ctx->buffer_meta_lock); while (!list_empty(&ctx->buffer_meta_list)) { meta = list_first_entry(&ctx->buffer_meta_list, struct coda_buffer_meta, list); @@ -1732,7 +1731,7 @@ static void coda_stop_streaming(struct vb2_queue *q) kfree(meta); } ctx->num_metas = 0; - spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags); + spin_unlock(&ctx->buffer_meta_lock); kfifo_init(&ctx->bitstream_fifo, ctx->bitstream.vaddr, ctx->bitstream.size); ctx->runcounter = 0;