diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2021-10-26 12:34:07 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-10-26 18:42:05 +0300 |
| commit | bf0d608b55d9b7f426031dfd9f08d9df36c94728 (patch) | |
| tree | 4dd54e1ea7400e81da56ec70f1be973dc4ec35eb /drivers/gpu/drm/i915/display/intel_display_debugfs.c | |
| parent | c4ae82a0e9222d275e3e4dd91c1cc3931ac0eca1 (diff) | |
| download | linux-bf0d608b55d9b7f426031dfd9f08d9df36c94728.tar.bz2 | |
drm/i915/dp: fix integer overflow in 128b/132b data rate calculation
The intermediate value 1000000 * 10 * 9671 overflows 32 bits, so force
promotion to a bigger type.
From the logs:
[drm:intel_dp_compute_config [i915]] DP link rate required 3657063 available -580783288
v2: Use mul_u32_u32() (Ville)
Fixes: 48efd014f0ea ("drm/i915/dp: add max data rate calculation for UHBR rates")
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211026093407.11381-1-jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display_debugfs.c')
0 files changed, 0 insertions, 0 deletions