From: Eric Dumazet <edumazet@xxxxxxxxxx>
commit b6c39bfcf1d7d63 ("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@xxxxxxxxxxxxx>
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Amir Vadai <amirv@xxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/en_clock.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_clock.c b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
index 2f18121..fd64410 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
@@ -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)
--
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