[media.git/next] media: vivid: fix wrong pixel_array control size

[media-ci]

On Sun Jul 6 12:55:40 2025 +0200, Hans Verkuil wrote:
> The pixel_array control size was calculated incorrectly:
> the dimensions were swapped (dims[0] should be the height), and the
> values should be the width or height divided by PIXEL_ARRAY_DIV
> and rounded up. So don't use roundup, but use DIV_ROUND_UP instead.
> 
> This bug is harmless in the sense that nothing will break, except that
> it consumes way too much memory for this control.
> 
> Fixes: 6bc7643d1b9c ("media: vivid: add pixel_array test control")
> Cc: <sta...@vger.kernel.org>
> Signed-off-by: Hans Verkuil <hverk...@xs4all.nl>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>

Patch committed.

Thanks,
Mauro Carvalho Chehab

 drivers/media/test-drivers/vivid/vivid-ctrls.c   | 3 ++-
 drivers/media/test-drivers/vivid/vivid-vid-cap.c | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

---

diff --git a/drivers/media/test-drivers/vivid/vivid-ctrls.c 
b/drivers/media/test-drivers/vivid/vivid-ctrls.c
index e340df0b6261..f94c15ff84f7 100644
--- a/drivers/media/test-drivers/vivid/vivid-ctrls.c
+++ b/drivers/media/test-drivers/vivid/vivid-ctrls.c
@@ -244,7 +244,8 @@ static const struct v4l2_ctrl_config 
vivid_ctrl_u8_pixel_array = {
        .min = 0x00,
        .max = 0xff,
        .step = 1,
-       .dims = { 640 / PIXEL_ARRAY_DIV, 360 / PIXEL_ARRAY_DIV },
+       .dims = { DIV_ROUND_UP(360, PIXEL_ARRAY_DIV),
+                 DIV_ROUND_UP(640, PIXEL_ARRAY_DIV) },
 };
 
 static const struct v4l2_ctrl_config vivid_ctrl_s32_array = {
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c 
b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index 84e9155b5815..2e4c1ed37cd2 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -454,8 +454,8 @@ void vivid_update_format_cap(struct vivid_dev *dev, bool 
keep_controls)
        if (keep_controls)
                return;
 
-       dims[0] = roundup(dev->src_rect.width, PIXEL_ARRAY_DIV);
-       dims[1] = roundup(dev->src_rect.height, PIXEL_ARRAY_DIV);
+       dims[0] = DIV_ROUND_UP(dev->src_rect.height, PIXEL_ARRAY_DIV);
+       dims[1] = DIV_ROUND_UP(dev->src_rect.width, PIXEL_ARRAY_DIV);
        v4l2_ctrl_modify_dimensions(dev->pixel_array, dims);
 }