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drm/i915: Fix potential overflows in ilk ips calculations
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 21 Oct 2020 13:14:41 +0000 (16:14 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 21 Oct 2020 20:20:19 +0000 (23:20 +0300)
commitd08c4e2327428d93f6d80ab0e7a79679f4c32906
tree7b4819819cacbf6f7f47b2f7b079119cd90a8e1ftree | snapshot
parente82351e74dcfc76c0f4241b5dbf8ee7c0ceb22becommit | diff
drm/i915: Fix potential overflows in ilk ips calculations

A bunch of the ips calculations require 64bit math. In particular
'corr' and 'corr2' look like they can overflow on 32bit systems.
Switch to explicit u64 for those.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201021131443.25616-3-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
drivers/gpu/drm/i915/gt/intel_rps.c diff | blob | history
Domain: System / Kernel;