This patch should have been part of the previous patch having the
same summary. See http://marc.info/?l=linux-kernel&m=143039470103795&w=2
Unfortunately, I didn't check to see where else this lock was used before
submitting that patch. This should take care of it for netxen_nic, as I
did a thorough search this time.
To recap from the original patch; although testing this driver with
DEBUG_LOCKDEP and DEBUG_SPINLOCK enabled did not produce any traces,
it would be more prudent in the case of tx_clean_lock to use _bh
versions of spin_[un]lock, since this lock is manipulated in both
the process and softirq contexts.
This patch was tested for functionality and regressions with netperf
and DEBUG_LOCKDEP and DEBUG_SPINLOCK enabled.
Signed-off-by: Tony Camuso <tcam...@redhat.com>
---
drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
index 2da9627..6301bae 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
@@ -1766,7 +1766,7 @@ int netxen_process_cmd_ring(struct netxen_adapter
*adapter)
int done = 0;
struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
- if (!spin_trylock(&adapter->tx_clean_lock))
+ if (!spin_trylock_bh(&adapter->tx_clean_lock))
return 1;
sw_consumer = tx_ring->sw_consumer;
@@ -1821,7 +1821,7 @@ int netxen_process_cmd_ring(struct netxen_adapter
*adapter)
*/
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
done = (sw_consumer == hw_consumer);
- spin_unlock(&adapter->tx_clean_lock);
+ spin_unlock_bh(&adapter->tx_clean_lock);
return done;
}
--
1.8.3.1
--
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