On Mon, 2020-01-27 at 15:30 +0100, Andrzej Pietrasiewicz wrote:
> Since (luma/chroma)_qtable is an array of unsigned char, indexing it
> returns consecutive byte locations, but we are supposed to read the arrays
> in four-byte words. Consequently, we should be pointing
> get_unaligned_be32() at consecutive word locations instead.
>
Ouch!
Seems we were too fast on that cleanup. Please add:
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 00c30f42c7595f "media: rockchip vpu: remove some unused vars"
Reviewed-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
Thanks,
Ezequiel
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
> ---
> drivers/staging/media/hantro/hantro_h1_jpeg_enc.c | 9 +++++++--
> drivers/staging/media/hantro/rk3399_vpu_hw_jpeg_enc.c | 9 +++++++--
> 2 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/hantro/hantro_h1_jpeg_enc.c b/drivers/staging/media/hantro/hantro_h1_jpeg_enc.c
> index 938b48d4d3d9..be787a045c7e 100644
> --- a/drivers/staging/media/hantro/hantro_h1_jpeg_enc.c
> +++ b/drivers/staging/media/hantro/hantro_h1_jpeg_enc.c
> @@ -67,12 +67,17 @@ hantro_h1_jpeg_enc_set_qtable(struct hantro_dev *vpu,
> unsigned char *chroma_qtable)
> {
> u32 reg, i;
> + __be32 *luma_qtable_p;
> + __be32 *chroma_qtable_p;
> +
> + luma_qtable_p = (__be32 *)luma_qtable;
> + chroma_qtable_p = (__be32 *)chroma_qtable;
>
> for (i = 0; i < H1_JPEG_QUANT_TABLE_COUNT; i++) {
> - reg = get_unaligned_be32(&luma_qtable[i]);
> + reg = get_unaligned_be32(&luma_qtable_p[i]);
> vepu_write_relaxed(vpu, reg, H1_REG_JPEG_LUMA_QUAT(i));
>
> - reg = get_unaligned_be32(&chroma_qtable[i]);
> + reg = get_unaligned_be32(&chroma_qtable_p[i]);
> vepu_write_relaxed(vpu, reg, H1_REG_JPEG_CHROMA_QUAT(i));
> }
> }
> diff --git a/drivers/staging/media/hantro/rk3399_vpu_hw_jpeg_enc.c b/drivers/staging/media/hantro/rk3399_vpu_hw_jpeg_enc.c
> index 067892345b5d..bdb95652d6a8 100644
> --- a/drivers/staging/media/hantro/rk3399_vpu_hw_jpeg_enc.c
> +++ b/drivers/staging/media/hantro/rk3399_vpu_hw_jpeg_enc.c
> @@ -98,12 +98,17 @@ rk3399_vpu_jpeg_enc_set_qtable(struct hantro_dev *vpu,
> unsigned char *chroma_qtable)
> {
> u32 reg, i;
> + __be32 *luma_qtable_p;
> + __be32 *chroma_qtable_p;
> +
> + luma_qtable_p = (__be32 *)luma_qtable;
> + chroma_qtable_p = (__be32 *)chroma_qtable;
>
> for (i = 0; i < VEPU_JPEG_QUANT_TABLE_COUNT; i++) {
> - reg = get_unaligned_be32(&luma_qtable[i]);
> + reg = get_unaligned_be32(&luma_qtable_p[i]);
> vepu_write_relaxed(vpu, reg, VEPU_REG_JPEG_LUMA_QUAT(i));
>
> - reg = get_unaligned_be32(&chroma_qtable[i]);
> + reg = get_unaligned_be32(&chroma_qtable_p[i]);
> vepu_write_relaxed(vpu, reg, VEPU_REG_JPEG_CHROMA_QUAT(i));
> }
> }
> --
> 2.17.1
>
>
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