drm/i915/display: Update calculation to avoid overflow

Update calculation to avoid overflow.

-v2:
Remove extra line between cc and signed-off.

Fixes: 1676ecd303ac ("drm/i915: Compute CMRR and calculate vtotal")
Cc: Mitul Golani <[email protected]>
Cc: Ankit Nautiyal <[email protected]>
Cc: Suraj Kandpal <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Signed-off-by: Mitul Golani <[email protected]>
Reviewed-by: Ankit Nautiyal <[email protected]>
Acked-by: Lucas De Marchi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Rodrigo Vivi <[email protected]>

0 files changed, 0 insertions, 0 deletions