From: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Date: Sun, 8 Mar 2015 14:40:39 +0000 (-0300)
Subject: [media] media: blackfin: bfin_capture: set min_buffers_needed
X-Git-Tag: firefly_0821_release~176^2~795^2~1230
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5f65ca81c321e8390645b80460444c3aa04c856f;p=firefly-linux-kernel-4.4.55.git

[media] media: blackfin: bfin_capture: set min_buffers_needed

this patch sets the min_buffers_needed field of the vb2 queue
so that the vb2 core will make sure start_streaming() callback
is called only when we have minimum buffers queued.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/drivers/media/platform/blackfin/bfin_capture.c b/drivers/media/platform/blackfin/bfin_capture.c
index 2c720bc4cb8f..332f8c972d11 100644
--- a/drivers/media/platform/blackfin/bfin_capture.c
+++ b/drivers/media/platform/blackfin/bfin_capture.c
@@ -986,6 +986,7 @@ static int bcap_probe(struct platform_device *pdev)
 	q->mem_ops = &vb2_dma_contig_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	q->lock = &bcap_dev->mutex;
+	q->min_buffers_needed = 1;
 
 	ret = vb2_queue_init(q);
 	if (ret)