From: Nathan Chancellor Date: Fri, 20 Mar 2020 02:16:38 +0000 (-0700) Subject: mlxsw: spectrum_cnt: Fix 64-bit division in mlxsw_sp_counter_resources_register X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c31f0ea737e60845392f14ea657cb3abfce83856;p=linux.git mlxsw: spectrum_cnt: Fix 64-bit division in mlxsw_sp_counter_resources_register When building arm32 allyesconfig: ld.lld: error: undefined symbol: __aeabi_uldivmod >>> referenced by spectrum_cnt.c >>> net/ethernet/mellanox/mlxsw/spectrum_cnt.o:(mlxsw_sp_counter_resources_register) in archive drivers/built-in.a >>> did you mean: __aeabi_uidivmod >>> defined in: arch/arm/lib/lib.a(lib1funcs.o) pool_size and bank_size are u64; use div64_u64 so that 32-bit platforms do not error. Fixes: ab8c4cc60420 ("mlxsw: spectrum_cnt: Move config validation along with resource register") Signed-off-by: Nathan Chancellor Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c index 0268f0a6662ac..7974982533b54 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c @@ -303,7 +303,7 @@ int mlxsw_sp_counter_resources_register(struct mlxsw_core *mlxsw_core) } /* Check config is valid, no bank over subscription */ - if (WARN_ON(total_bank_config > pool_size / bank_size + 1)) + if (WARN_ON(total_bank_config > div64_u64(pool_size, bank_size) + 1)) return -EINVAL; return 0;