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mlxsw: spectrum_kvdl: use div_u64() for 64-bit division

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Calculating the number of entries now uses 64-bit arithmetic that
causes a link error on 32-bit architectures:

drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.o: In function `mlxsw_sp_kvdl_init':
spectrum_kvdl.c:(.text+0x51c): undefined reference to `__aeabi_uldivmod'

We could probably use a 32-bit division here as before, but since this is
not in a performance critical path, div_u64() seems cleaner here.

Fixes: 887839e696 ("mlxsw: spectrum_kvdl: Add support for dynamic partition set")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-02-23 14:15:31 +01:00 committed by David S. Miller
parent 25ab47ef48
commit b89c7695b1
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
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@ -278,7 +278,7 @@ static int mlxsw_sp_kvdl_part_init(struct mlxsw_sp *mlxsw_sp,
resource_size = info->end_index - info->start_index + 1;
}
nr_entries = resource_size / info->alloc_size;
nr_entries = div_u64(resource_size, info->alloc_size);
usage_size = BITS_TO_LONGS(nr_entries) * sizeof(unsigned long);
part = kzalloc(sizeof(*part) + usage_size, GFP_KERNEL);
if (!part)