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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2013-01-08 07:00:58 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-02-05 01:44:19 -0800 |
| commit | 7e63bf490151f7e457002fc046601bb6bb541fa3 (patch) | |
| tree | c8d2f06af100ecff7df4d774c16f59348afa1cc4 /drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | |
| parent | ixgbe: update date to 2013 (diff) | |
| download | linux-dev-7e63bf490151f7e457002fc046601bb6bb541fa3.tar.xz linux-dev-7e63bf490151f7e457002fc046601bb6bb541fa3.zip | |
ixgbe: Replace rmb in Tx cleanup with read_barrier_depends
The rmb in the Tx cleanup path is a much stronger barrier than we really need.
All that is really needed is a read_barrier_depends since the location of the
EOP descriptor is dependent on the eop_desc value.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 88500dd2d4a9..ef9cb0ab4314 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -838,7 +838,7 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, break; /* prevent any other reads prior to eop_desc */ - rmb(); + read_barrier_depends(); /* if DD is not set pending work has not been completed */ if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) |