diff options
| author | Alexander Duyck <[email protected]> | 2015-04-07 23:55:27 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-04-08 16:15:14 +0000 |
| commit | 837a1dba0078d0bad755f6cb13a48c1623d11ff5 (patch) | |
| tree | e49f879b6fa316806202bb1f43c9dce4e3cbe535 /drivers/net/ethernet/intel/e1000e/netdev.c | |
| parent | s2io: Update driver to use dma_wmb (diff) | |
| download | kernel-837a1dba0078d0bad755f6cb13a48c1623d11ff5.tar.gz kernel-837a1dba0078d0bad755f6cb13a48c1623d11ff5.zip | |
e1000, e1000e: Use dma_rmb instead of rmb for descriptor read ordering
This change replaces calls to rmb with dma_rmb in the case where we want to
order all follow-on descriptor reads after the check for the descriptor
status bit.
Signed-off-by: Alexander Duyck <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/netdev.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 4e56c3195989..74ec185a697f 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -947,7 +947,7 @@ static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, if (*work_done >= work_to_do) break; (*work_done)++; - rmb(); /* read descriptor and rx_buffer_info after status DD */ + dma_rmb(); /* read descriptor and rx_buffer_info after status DD */ skb = buffer_info->skb; buffer_info->skb = NULL; @@ -1232,7 +1232,7 @@ static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) (count < tx_ring->count)) { bool cleaned = false; - rmb(); /* read buffer_info after eop_desc */ + dma_rmb(); /* read buffer_info after eop_desc */ for (; !cleaned; count++) { tx_desc = E1000_TX_DESC(*tx_ring, i); buffer_info = &tx_ring->buffer_info[i]; @@ -1332,7 +1332,7 @@ static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, break; (*work_done)++; skb = buffer_info->skb; - rmb(); /* read descriptor and rx_buffer_info after status DD */ + dma_rmb(); /* read descriptor and rx_buffer_info after status DD */ /* in the packet split case this is header only */ prefetch(skb->data - NET_IP_ALIGN); @@ -1536,7 +1536,7 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, if (*work_done >= work_to_do) break; (*work_done)++; - rmb(); /* read descriptor and rx_buffer_info after status DD */ + dma_rmb(); /* read descriptor and rx_buffer_info after status DD */ skb = buffer_info->skb; buffer_info->skb = NULL; |