On 08/09/2023 04:26, Abhinav Kumar wrote:
_dpu_plane_calc_bw() uses integer variables to calculate the bandwidth
used during plane bandwidth calculations. However for high resolution
displays this overflows easily and leads to below errors
[dpu error]crtc83 failed performance check -7
Promote the intermediate variables to u64 to avoid overflow.
changes in v2:
- change to u64 where actually needed in the math
Fixes: c33b7c0389e1 ("drm/msm/dpu: add support for clk and bw scaling for display")
Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/32
Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
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drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
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With best wishes
Dmitry
