From: Benoit Parrot bparrot@ti.com
[ Upstream commit 0bac73adea4df8d34048b38f6ff24dc3e73e90b6 ]
v4l2-compliance fails with this message:
fail: v4l2-test-formats.cpp(463): !pfmt.sizeimage fail: v4l2-test-formats.cpp(736): \ Video Capture Multiplanar is valid, \ but TRY_FMT failed to return a format test VIDIOC_TRY_FMT: FAIL
This failure is causd by the driver failing to handle out range 'bytesperline' values from user space applications.
VPDMA hardware is limited to 64k line stride (16 bytes aligned, so 65520 bytes). So make sure the provided or calculated 'bytesperline' is smaller than the maximum value.
Signed-off-by: Benoit Parrot bparrot@ti.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/ti-vpe/vpdma.h | 1 + drivers/media/platform/ti-vpe/vpe.c | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/drivers/media/platform/ti-vpe/vpdma.h b/drivers/media/platform/ti-vpe/vpdma.h index 28bc94129348..9bacfd603250 100644 --- a/drivers/media/platform/ti-vpe/vpdma.h +++ b/drivers/media/platform/ti-vpe/vpdma.h @@ -57,6 +57,7 @@ struct vpdma_data_format { * line stride of source and dest * buffers should be 16 byte aligned */ +#define VPDMA_MAX_STRIDE 65520 /* Max line stride 16 byte aligned */ #define VPDMA_DTD_DESC_SIZE 32 /* 8 words */ #define VPDMA_CFD_CTD_DESC_SIZE 16 /* 4 words */
diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c index 512660b4ee63..8b14ba4a3d9e 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -1668,6 +1668,10 @@ static int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f, if (stride > plane_fmt->bytesperline) plane_fmt->bytesperline = stride;
+ plane_fmt->bytesperline = clamp_t(u32, plane_fmt->bytesperline, + stride, + VPDMA_MAX_STRIDE); + plane_fmt->bytesperline = ALIGN(plane_fmt->bytesperline, VPDMA_STRIDE_ALIGN);