Public bug reported:

[Impact]

Wrapper functions for dcn_bw_ceil2() and dcn_bw_floor2()
should check for granularity is non zero to avoid assert and
divide-by-zero error in dcn_bw_ functions.

cherry-pick from stable

[Test case]

WIP

[Regression potential]

adds just a check for a non-zero value, and this has been upstream for a
while now so should not break a thing

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: linux (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Oracular)
     Importance: Undecided
         Status: New

** Also affects: linux (Ubuntu Oracular)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => Fix Released

** Description changed:

  [Impact]
  
  Wrapper functions for dcn_bw_ceil2() and dcn_bw_floor2()
  should check for granularity is non zero to avoid assert and
  divide-by-zero error in dcn_bw_ functions.
  
  cherry-pick from stable
  
  [Test case]
  
  WIP
  
  [Regression potential]
  
- WIP
+ adds just a check for a non-zero value, and this has been upstream for a
+ while now so should not break a thing

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https://bugs.launchpad.net/bugs/2098080

Title:
  drm/amd/display: Add check for granularity in dml ceil/floor helpers

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