linux-kernel - Re: linux-next: Tree for Apr 30 (netdev: mellanox/mlx4)

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Message-ID: <1367350578.11020.4.camel@edumazet-glaptop>
Date:	Tue, 30 Apr 2013 12:36:18 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Randy Dunlap <rdunlap@...radead.org>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Amir Vadai <amirv@...lanox.com>
Subject: Re: linux-next: Tree for Apr 30 (netdev: mellanox/mlx4)

On Tue, 2013-04-30 at 11:58 -0700, Randy Dunlap wrote:
> On 04/29/13 23:57, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Please do not add any v3.11 destined work to your linux-next included
> > branches until after v3.10-rc1 is released.
> > 
> > Changes since 20130429:
> > 
> 
> on i386:
> 
> ERROR: "__udivdi3" [drivers/net/ethernet/mellanox/mlx4/mlx4_en.ko] undefined!
> 
> 

Could you try the following patch/fix ?

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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