From: Nathan Chancellor <natechancellor@gmail.com>
Date: Thu, 19 Mar 2020 19:16:38 -0700
Subject: mlxsw: spectrum_cnt: Fix 64-bit division in
 mlxsw_sp_counter_resources_register
Patch-mainline: v5.7-rc1
Git-commit: c31f0ea737e60845392f14ea657cb3abfce83856
References: bsc#1176774

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 <natechancellor@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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(
 	}
 
 	/* 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;