From patchwork Mon Dec 4 13:22:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 750298 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="LGuCyNM5" Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9758295; Mon, 4 Dec 2023 05:23:36 -0800 (PST) Received: from benjamin-XPS-13-9310.. (ec2-34-240-57-77.eu-west-1.compute.amazonaws.com [34.240.57.77]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id E91DF6605835; Mon, 4 Dec 2023 13:23:34 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1701696215; bh=/jXOJsw0p75OXpH12qRqf2mFFTImN471wSEgNYwBmG0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LGuCyNM5hcxzCsRTiYNtAcnlFtm2LTROFeLGFP+16aozE/clXAf370U6xBkhRtOhe uSGmSVWUvaRyW4Bil7+Jh5PX2e9pny6Is9oMmv1FoS0skDmPZXX+6srUwjZni61EeU Y9j+C0RIicWsyX0uQCVCWj3DEi8dFOC2LlHjv2nRMfioCdoTSpRYI3M6GHKuvpPpVG O9G9QhUfr8v6o6LkctQt9NPED5klHsOVoGbB6HysCFy5Z4/Ae7aPM3J/tZKHEERrsY bQf0WWOelyNfruoqU3vMI4M9TxoEnszzW5QCT6RzlBW9HgHoIeO0+2ENgTi5kNqmnu yWShit1oxBLUQ== From: Benjamin Gaignard 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 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> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231204132323.22811-1-benjamin.gaignard@collabora.com> References: <20231204132323.22811-1-benjamin.gaignard@collabora.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- 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)