From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 44FF5125DB for ; Fri, 10 Nov 2023 09:35:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="Ujoba2dM" Received: from [100.116.125.19] (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: andrzej.p) by madras.collabora.co.uk (Postfix) with ESMTPSA id 7F2B166073E5; Fri, 10 Nov 2023 09:35:23 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1699608924; bh=zzFscefQrgc4TdbI+LfNRWkkOS6+9+C/l2hym7xAKOU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Ujoba2dM9hW8ryQCdIcptLKDQJGSJS0BCOSiGJ4LsCFaxP9IfPaEvTuMGnU9aiT4p lP0smWeoZK4MAjRWP8JN/bPcd+WrUJbF5WiAKpU7JIoXzEl7Gcwac2PEqwpWaIi0wM cBRCY0LYFBR0iyBtKMe4jozNJtko4IZjR1utl3nA5swJljUAGIHdxUQdPuWcljylIO GW8cl61cCjjkGKAxF0S3a6MKRgK/h9oCcTla+BTzCVA9DpPWAHTbuCNFlm6S2RgqKc 8xwktd49BLoa/n6GQcQ/BLiDlehochHjOI4WN0fEUGlc5TfoG1HzcL/LIX4jK9yqAc LLB2B+HGjLsTg== Message-ID: <0b79bb25-2e44-4a6d-b306-76477a2c8a08@collabora.com> Date: Fri, 10 Nov 2023 10:35:20 +0100 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v15 30/56] media: test-drivers: Stop direct calls to queue num_buffers field Content-Language: en-US To: Benjamin Gaignard , mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com, ming.qian@nxp.com, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, hverkuil-cisco@xs4all.nl, nicolas.dufresne@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, kernel@collabora.com, Daniel Almeida References: <20231109163512.179524-14-benjamin.gaignard@collabora.com> <20231109163512.179524-31-benjamin.gaignard@collabora.com> From: Andrzej Pietrasiewicz In-Reply-To: <20231109163512.179524-31-benjamin.gaignard@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Benjamin, W dniu 9.11.2023 o 17:34, Benjamin Gaignard pisze: > Use vb2_get_num_buffers() to avoid using queue num_buffers field directly. > This allows us to change how the number of buffers is computed in the > future. > If 'min_buffers_needed' is set remove useless checks in queue setup > functions. > > Signed-off-by: Benjamin Gaignard > CC: Daniel Almeida > --- > drivers/media/test-drivers/visl/visl-dec.c | 4 ++-- > drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 --- > drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++-- > drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++-- > drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 --- > drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 --- > drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 --- > drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +---- > 8 files changed, 9 insertions(+), 22 deletions(-) > > diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c > index ba20ea998d19..4672dc5e52bb 100644 > --- a/drivers/media/test-drivers/visl/visl-dec.c > +++ b/drivers/media/test-drivers/visl/visl-dec.c > @@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run) > frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf); > > len = 0; > - for (i = 0; i < out_q->num_buffers; i++) { > + for (i = 0; i < vb2_get_num_buffers(out_q); i++) { > char entry[] = "index: %u, state: %s, request_fd: %d, "; > u32 old_len = len; > struct vb2_buffer *vb2; > @@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run) > frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf); > > len = 0; > - for (i = 0; i < cap_q->num_buffers; i++) { > + for (i = 0; i < vb2_get_num_buffers(cap_q); i++) { > u32 old_len = len; > struct vb2_buffer *vb2; > char *q_status; > diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c > index 780f96860a6d..0a718d037e59 100644 > --- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c > +++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c > @@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, > sizes[0] = size; > } > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > - > *nplanes = 1; > return 0; > } > diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c > index 95835b52b58f..4a569a6e58be 100644 > --- a/drivers/media/test-drivers/vivid/vivid-meta-out.c > +++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c > @@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, > struct device *alloc_devs[]) > { > struct vivid_dev *dev = vb2_get_drv_priv(vq); > + unsigned int q_num_bufs = vb2_get_num_buffers(vq); > unsigned int size = sizeof(struct vivid_meta_out_buf); > > if (!vivid_is_webcam(dev)) > @@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, > sizes[0] = size; > } > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > + if (q_num_bufs + *nbuffers < 2) > + *nbuffers = 2 - q_num_bufs; > > *nplanes = 1; > return 0; > diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c > index c7f6e23df51e..4b3c6ea0afde 100644 > --- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c > +++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c > @@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, > struct device *alloc_devs[]) > { > struct vivid_dev *dev = vb2_get_drv_priv(vq); > + unsigned int q_num_bufs = vb2_get_num_buffers(vq); > struct v4l2_pix_format *f = &dev->tch_format; > unsigned int size = f->sizeimage; > > @@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, > sizes[0] = size; > } > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > + if (q_num_bufs + *nbuffers < 2) > + *nbuffers = 2 - q_num_bufs; > > *nplanes = 1; > return 0; > diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c > index b65b02eeeb97..3840b3a664ac 100644 > --- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c > +++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c > @@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq, > > sizes[0] = size; > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > - > *nplanes = 1; > return 0; > } > diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c > index cd56476902a2..434a10676417 100644 > --- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c > +++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c > @@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq, > > sizes[0] = size; > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > - > *nplanes = 1; > return 0; > } > diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c > index 3a06df35a2d7..2804975fe278 100644 > --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c > +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c > @@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq, > dev->fmt_cap->data_offset[p]; > } > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > - > *nplanes = buffers; > > dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers); here the format specifier for "*nbuffers" is "%d"... > diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c > index 184a6df2c29f..1653b2988f7e 100644 > --- a/drivers/media/test-drivers/vivid/vivid-vid-out.c > +++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c > @@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq, > vfmt->data_offset[p] : size; > } > > - if (vq->num_buffers + *nbuffers < 2) > - *nbuffers = 2 - vq->num_buffers; > - > *nplanes = planes; > > - dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers); > + dprintk(dev, 1, "%s: count=%u\n", __func__, *nbuffers); ... but here you change it to "%u". Is there a reason for these two to be different? I didn't notice it in the previous version but now it stands out clearly. Probably you changed to %u because of the type returned by vb2_get_num_buffers(). And, actually, *nbuffers _is_ unsigned, too. Regards, Andrzej > for (p = 0; p < planes; p++) > dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]); > return 0;