From: Aurelien Jacquiot <redacted>
Fix deadlocking during concurrent receive and transmit operations on SMP
platforms caused by the use of incorrect lock: on transmit 'tx_lock'
spinlock should be used instead of 'lock' which is used for receive
operation.
This fix is applicable to kernel versions starting from v2.15.
Signed-off-by: Aurelien Jacquiot <redacted>
Signed-off-by: Alexandre Bounine <redacted>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <redacted>
Cc: <redacted>
Cc: <redacted>
---
drivers/net/rionet.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/rionet.c b/drivers/net/rionet.c
index 01f08a7..e7034c5 100644
--- a/drivers/net/rionet.c
+++ b/drivers/net/rionet.c
@@ -280,7 +280,7 @@ static void rionet_outb_msg_event(struct rio_mport *mport, void *dev_id, int mbo
struct net_device *ndev = dev_id;
struct rionet_private *rnet = netdev_priv(ndev);
- spin_lock(&rnet->lock);
+ spin_lock(&rnet->tx_lock);
if (netif_msg_intr(rnet))
printk(KERN_INFO
@@ -299,7 +299,7 @@ static void rionet_outb_msg_event(struct rio_mport *mport, void *dev_id, int mbo
if (rnet->tx_cnt < RIONET_TX_RING_SIZE)
netif_wake_queue(ndev);
- spin_unlock(&rnet->lock);
+ spin_unlock(&rnet->tx_lock);
}
static int rionet_open(struct net_device *ndev)
--
1.7.8.4