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path: root/drivers/net/e1000e/netdev.c
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Diffstat (limited to 'drivers/net/e1000e/netdev.c')
-rw-r--r--drivers/net/e1000e/netdev.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 521c6ee1..2b8ef44 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -781,6 +781,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
if (*work_done >= work_to_do)
break;
(*work_done)++;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
skb = buffer_info->skb;
@@ -991,6 +992,7 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
(count < tx_ring->count)) {
bool cleaned = false;
+ 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];
@@ -1087,6 +1089,7 @@ static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
break;
(*work_done)++;
skb = buffer_info->skb;
+ 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);
@@ -1286,6 +1289,7 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
if (*work_done >= work_to_do)
break;
(*work_done)++;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
skb = buffer_info->skb;
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