(In reply to Diego Viola from comment #41)
> $ git bisect good
> 6328536ff28ca26f2ad4e6f2c956c467acebda88 is the first bad commit
> commit 6328536ff28ca26f2ad4e6f2c956c467acebda88
> Author: Eric Anholt <eric@anholt.net>
> Date:   Fri Nov 2 14:35:06 2018 -0700
> 
>     gbm: Introduce a helper function for printing GBM format names.
>     
>     This requires that the caller make a little (stack) allocation to store
>     the string.
>     
>     v2: Use gbm_format_canonicalize (suggested by Daniel)
>     
>     Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
>     Reviewed-by: Daniel Stone <daniels@collabora.com>
> 
> :040000 040000 033db8e2d54ead2f34691e6b8e234a06428381fd
> 50d5e1cbd57b488d0e24fd86787c611bf58bd588 M	src

I'm afraid this is a red herring: as you can see from looking at the commit, it
simply adds new API with no actual user.