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From:   Benjamin Gaignard <benjamin.gaignard@collabora.com>
To:     hverkuil@xs4all.nl, mchehab@kernel.org, tfiga@chromium.org,
        m.szyprowski@samsung.com, matt.ranostay@konsulko.com
Cc:     linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
        linux-staging@lists.linux.dev, kernel@collabora.com,
        Benjamin Gaignard <benjamin.gaignard@collabora.com>
Subject: [PATCH v2 01/36] media: usb: cx231xx: Remove useless setting of min_buffers_needed
Date:   Mon,  4 Dec 2023 14:22:48 +0100
Message-Id: <20231204132323.22811-2-benjamin.gaignard@collabora.com>
In-Reply-To: <20231204132323.22811-1-benjamin.gaignard@collabora.com>
References: <20231204132323.22811-1-benjamin.gaignard@collabora.com>
MIME-Version: 1.0
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This driver uses min_buffers_needed which vb2 uses to ensure
start_streaming is called when at least 'min_buffers_needed'
buffers are queued. However, this driver doesn't need this,
it can stream fine without any buffers queued.
Just drop this unnecessary restriction.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 drivers/media/usb/cx231xx/cx231xx-417.c   | 1 -
 drivers/media/usb/cx231xx/cx231xx-video.c | 2 --
 2 files changed, 3 deletions(-)

diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index 45973fe690b2..24c94cfb5268 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -1782,7 +1782,6 @@ int cx231xx_417_register(struct cx231xx *dev)
 	q->ops = &cx231xx_video_qops;
 	q->mem_ops = &vb2_vmalloc_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_buffers_needed = 1;
 	q->lock = &dev->lock;
 	err = vb2_queue_init(q);
 	if (err)
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index c8eb4222319d..ce44114e2188 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -1811,7 +1811,6 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
 	q->ops = &cx231xx_video_qops;
 	q->mem_ops = &vb2_vmalloc_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_buffers_needed = 1;
 	q->lock = &dev->lock;
 	ret = vb2_queue_init(q);
 	if (ret)
@@ -1871,7 +1870,6 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
 	q->ops = &cx231xx_vbi_qops;
 	q->mem_ops = &vb2_vmalloc_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_buffers_needed = 1;
 	q->lock = &dev->lock;
 	ret = vb2_queue_init(q);
 	if (ret)
-- 
2.39.2