Re: [PATCH v15 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
From: Andrzej Pietrasiewicz
Date: Fri Nov 10 2023 - 13:29:46 EST
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 <benjamin.gaignard@xxxxxxxxxxxxx>
CC: Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx>
---
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;