Re: [PATCH net-next] mlxsw: Fix 64-bit division in mlxsw_sp_sb_prs_init

[David Miller]

From: Nathan Chancellor <natechancellor@xxxxxxxxx>
Date: Wed, 30 Oct 2019 09:01:52 -0700

> When building for 32-bit ARM, there is a link time error because of a
> 64-bit division:
> 
> ld.lld: error: undefined symbol: __aeabi_uldivmod
>>>> referenced by spectrum_buffers.c
>>>>               net/ethernet/mellanox/mlxsw/spectrum_buffers.o:(mlxsw_sp_buffers_init) in archive drivers/built-in.a
>>>> did you mean: __aeabi_uidivmod
>>>> defined in: arch/arm/lib/lib.a(lib1funcs.o
> 
> Avoid this by using div_u64, which is designed to avoid this problem.
> 
> Fixes: bc9f6e94bcb5 ("mlxsw: spectrum_buffers: Calculate the size of the main pool")
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

Applied, thanks.