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mlx4_en: fix a build error on 32bit arches

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commit b6c39bfcf1 ("net/mlx4_en: Add a service task")
added a build error on 32bit arches.

ERROR: "__udivdi3" [drivers/net/ethernet/mellanox/mlx4/mlx4_en.ko]
undefined!

Fix this problem by using do_div()

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2013-04-30 10:53:51 +00:00 committed by David S. Miller
parent 97cd1ee6ef
commit fe86d71416
1 changed files with 4 additions and 4 deletions
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8
drivers/net/ethernet/mellanox/mlx4/en_clock.c
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@ -114,6 +114,7 @@ void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev,
void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
{
struct mlx4_dev *dev = mdev->dev;
u64 ns;
memset(&mdev->cycles, 0, sizeof(mdev->cycles));
mdev->cycles.read = mlx4_en_read_clock;
@ -133,10 +134,9 @@ void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)
/* Calculate period in seconds to call the overflow watchdog - to make
* sure counter is checked at least once every wrap around.
*/
mdev->overflow_period =
(cyclecounter_cyc2ns(&mdev->cycles,
mdev->cycles.mask) / NSEC_PER_SEC / 2)
* HZ;
ns = cyclecounter_cyc2ns(&mdev->cycles, mdev->cycles.mask);
do_div(ns, NSEC_PER_SEC / 2 / HZ);
mdev->overflow_period = ns;
}
void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev)