linux-kernel - [PATCH v9 23/53] media: dvb-frontends: rtl2832_srd: Use queue min_buffers

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Date:   Mon,  2 Oct 2023 14:05:47 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     mchehab@...nel.org, tfiga@...omium.org, m.szyprowski@...sung.com,
        ming.qian@....com, ezequiel@...guardiasur.com.ar,
        p.zabel@...gutronix.de, gregkh@...uxfoundation.org,
        hverkuil-cisco@...all.nl, nicolas.dufresne@...labora.com
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v9 23/53] media: dvb-frontends: rtl2832_srd: Use queue min_buffers_needed field

queue_setup checks for a minimum number of buffers so use queue
min_buffers_needed field and remove the check done in
rtl2832_sdr_queue_setup().

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
 drivers/media/dvb-frontends/rtl2832_sdr.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index 02c619e51641..597b1548ed8b 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -440,14 +440,9 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
 	struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
 	struct platform_device *pdev = dev->pdev;
 
-	dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
-
-	/* Need at least 8 buffers */
-	if (vq->num_buffers + *nbuffers < 8)
-		*nbuffers = 8 - vq->num_buffers;
 	*nplanes = 1;
 	sizes[0] = PAGE_ALIGN(dev->buffersize);
-	dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
+	dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", vb2_get_num_buffers(vq), sizes[0]);
 	return 0;
 }
 
@@ -1364,6 +1359,8 @@ static int rtl2832_sdr_probe(struct platform_device *pdev)
 	dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;
 	dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
 	dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	/* Need at least 8 buffers */
+	dev->vb_queue.min_buffers_needed = 8;
 	ret = vb2_queue_init(&dev->vb_queue);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not initialize vb2 queue\n");
-- 
2.39.2