Re: [Intel-gfx] [PATCH 4/4] drm/dp_mst: Fix PBN divider calculation for UHBR rates

Hi Imre, kernel test robot noticed the following build errors: [auto build test ERROR on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Imre-Deak/drm-i915-dp-Fix-UHBR-link-M-N-values/20231114-043135 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link:

Re: [Intel-gfx] [PATCH 4/4] drm/dp_mst: Fix PBN divider calculation for UHBR rates

Hi Imre, kernel test robot noticed the following build errors: [auto build test ERROR on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Imre-Deak/drm-i915-dp-Fix-UHBR-link-M-N-values/20231114-043135 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link:

[Intel-gfx] [PATCH 4/4] drm/dp_mst: Fix PBN divider calculation for UHBR rates

The current way of calculating the pbn_div value, the link BW per each MTP slot, worked only for DP 1.4 link rates. Fix things up for UHBR rates calculating with the correct channel coding efficiency based on the link rate. On UHBR the resulting pbn_div value is not an integer (vs. DP 1.4 where