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netxen: fix deadlock on dev close

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netxen: fix deadlock on dev close

The tx ring accounting fix in commit cb2107be43
("netxen: fix tx ring accounting") introduced intermittent
deadlock when inteface is going down.

This was possibly combined effect of speculative tx pause,
calling netif_tx_lock instead of queue lock and unclean
synchronization with napi which could end up unmasking
interrupt.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke
2009-07-17 15:27:07 +00:00
committed by David S. Miller
parent cf981ffb31
commit b2af9cb06d
4 changed files with 23 additions and 13 deletions
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2
drivers/net/netxen/netxen_nic.h
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@@ -774,6 +774,8 @@ struct nx_host_tx_ring {
u32 crb_cmd_consumer;
u32 num_desc;
struct netdev_queue *txq;
struct netxen_cmd_buffer *cmd_buf_arr;
struct cmd_desc_type0 *desc_head;
dma_addr_t phys_addr;