Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Benoit Parrot <bparrot@ti.com>
To:     Hans Verkuil <hverkuil@xs4all.nl>
CC:     <linux-media@vger.kernel.org>, Rob Herring <robh+dt@kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Benoit Parrot <bparrot@ti.com>
Subject: [Patch v2 17/20] media: ti-vpe: cal: Fix a WARN issued when start streaming fails
Date:   Mon, 4 Nov 2019 13:31:37 -0600
Message-ID: <20191104193140.31145-18-bparrot@ti.com>
In-Reply-To: <20191104193140.31145-1-bparrot@ti.com>
References: <20191104193140.31145-1-bparrot@ti.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

When start_streaming fails after the buffers have been queued we have to
make sure all buffers are returned to user-space properly otherwise a
v4l2 level WARN is generated.

Signed-off-by: Benoit Parrot <bparrot@ti.com>
---
 drivers/media/platform/ti-vpe/cal.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 20160845014e..cc5af830fa10 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1702,10 +1702,15 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
 	return 0;
 
 err:
+	spin_lock_irqsave(&ctx->slock, flags);
+	vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+	ctx->cur_frm = NULL;
+	ctx->next_frm = NULL;
 	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
 		list_del(&buf->list);
 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
 	}
+	spin_unlock_irqrestore(&ctx->slock, flags);
 	return ret;
 }
 
-- 
2.17.1