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authorEli Cohen <eli@dev.mellanox.co.il>2014-10-23 15:57:27 +0300
committerDavid S. Miller <davem@davemloft.net>2014-10-26 22:46:04 -0400
commitbf1bac5b7882daa41249f85fbc97828f0597de5c (patch)
tree2243934db57482a50d163c53db8cf7f5836dac22 /drivers/net
parent96e4be06cbfcb8c9c2da7c77bacce0e56b581c0b (diff)
downloadlinux-bf1bac5b7882daa41249f85fbc97828f0597de5c.tar.bz2
net/mlx4_core: Call synchronize_irq() before freeing EQ buffer
After moving the EQ ownership to software effectively destroying it, call synchronize_irq() to ensure that any handler routines running on other CPU cores finish execution. Only then free the EQ buffer. The same thing is done when we destroy a CQ which is one of the sources generating interrupts. In the case of CQ we want to avoid completion handlers on a CQ that was destroyed. In the case we do the same to avoid receiving asynchronous events after the EQ has been destroyed and its buffers freed. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/eq.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index a49c9d11d8a5..49290a405903 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -1026,6 +1026,7 @@ static void mlx4_free_eq(struct mlx4_dev *dev,
pr_cont("\n");
}
}
+ synchronize_irq(eq->irq);
mlx4_mtt_cleanup(dev, &eq->mtt);
for (i = 0; i < npages; ++i)