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| author | Abhinav Kumar <quic_abhinavk@quicinc.com> | 2023-09-07 18:26:16 -0700 |
|---|---|---|
| committer | Abhinav Kumar <quic_abhinavk@quicinc.com> | 2023-09-20 16:33:35 -0700 |
| commit | 95e681ca3b65e4ce3d2537b47672d787b7d30375 (patch) | |
| tree | 9963ebaa52bea17ce18a79bcdcdd242bca4eb64a /drivers/net/ethernet/intel/igc/igc_ethtool.c | |
| parent | 6a1d4c7976dd1ee7c9f80bc8e62801ec7b1f2f58 (diff) | |
drm/msm/dpu: change _dpu_plane_calc_bw() to use u64 to avoid overflow
_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")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reported-by: Nia Espera <nespera@igalia.com>
Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/32
Tested-by: Nia Espera <nespera@igalia.com>
Patchwork: https://patchwork.freedesktop.org/patch/556288/
Link: https://lore.kernel.org/r/20230908012616.20654-1-quic_abhinavk@quicinc.com
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_ethtool.c')
0 files changed, 0 insertions, 0 deletions