diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2023-04-27 10:43:17 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-10-12 09:46:37 +0200 |
| commit | 5964c90a04291e1fb94d65b5641b526316e48830 (patch) | |
| tree | dd3289c47b379619996fd21728c1480c6752109e /drivers/media | |
| parent | media: rkisp1: Constify rkisp1_v12_params_ops (diff) | |
| download | linux-5964c90a04291e1fb94d65b5641b526316e48830.tar.xz linux-5964c90a04291e1fb94d65b5641b526316e48830.zip | |
media: rkisp1: Fix line stride calculation
The line stride is expressed in the hardware as a number of pixels for
the first plane. The bytesperline must thus be a multiple of the first
plane's bpp value. Enforce this constraint.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c index 8f3cba319762..3c1e2c1a8bbe 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c @@ -1101,14 +1101,20 @@ rkisp1_fill_pixfmt(struct v4l2_pix_format_mplane *pixm, memset(pixm->plane_fmt, 0, sizeof(pixm->plane_fmt)); info = v4l2_format_info(pixm->pixelformat); pixm->num_planes = info->mem_planes; - stride = info->bpp[0] * pixm->width; - /* Self path supports custom stride but Main path doesn't */ - if (id == RKISP1_MAINPATH || plane_y->bytesperline < stride) - plane_y->bytesperline = stride; - plane_y->sizeimage = plane_y->bytesperline * pixm->height; - /* normalize stride to pixels per line */ - stride = DIV_ROUND_UP(plane_y->bytesperline, info->bpp[0]); + /* + * The SP supports custom strides, expressed as a number of pixels for + * the Y plane. Clamp the stride to a reasonable value to avoid integer + * overflows when calculating the bytesperline and sizeimage values. + */ + if (id == RKISP1_SELFPATH) + stride = clamp(DIV_ROUND_UP(plane_y->bytesperline, info->bpp[0]), + pixm->width, 65536U); + else + stride = pixm->width; + + plane_y->bytesperline = stride * info->bpp[0]; + plane_y->sizeimage = plane_y->bytesperline * pixm->height; for (i = 1; i < info->comp_planes; i++) { struct v4l2_plane_pix_format *plane = &pixm->plane_fmt[i]; |