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authorFelix Fietkau <nbd@nbd.name>2016-06-17 23:58:11 +0200
committerFelix Fietkau <nbd@nbd.name>2016-06-26 11:21:17 +0200
commit3d58d7f053eae83b59baf5c8b8a58da78653f605 (patch)
treef0a09f8cd34e718b40cd804e1256362c1e811570 /target/linux
parent26b8db253745b0591bfffa21f02323428f11a88f (diff)
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ar71xx: prevent spurious ethernet resets from dma hang check false positives
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h2
-rw-r--r--target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c9
2 files changed, 6 insertions, 5 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
index 5d03dcf..898bde1 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
@@ -174,7 +174,7 @@ struct ag71xx {
unsigned int desc_pktlen_mask;
unsigned int rx_buf_size;
- struct work_struct restart_work;
+ struct delayed_work restart_work;
struct delayed_work link_work;
struct timer_list oom_timer;
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index d7c2739..65bc89e 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -908,12 +908,12 @@ static void ag71xx_tx_timeout(struct net_device *dev)
if (netif_msg_tx_err(ag))
pr_info("%s: tx timeout\n", ag->dev->name);
- schedule_work(&ag->restart_work);
+ schedule_delayed_work(&ag->restart_work, 1);
}
static void ag71xx_restart_work_func(struct work_struct *work)
{
- struct ag71xx *ag = container_of(work, struct ag71xx, restart_work);
+ struct ag71xx *ag = container_of(work, struct ag71xx, restart_work.work);
rtnl_lock();
ag71xx_hw_disable(ag);
@@ -966,7 +966,7 @@ static int ag71xx_tx_packets(struct ag71xx *ag, bool flush)
if (!flush && !ag71xx_desc_empty(desc)) {
if (pdata->is_ar724x &&
ag71xx_check_dma_stuck(ag, ring->buf[i].timestamp))
- schedule_work(&ag->restart_work);
+ schedule_delayed_work(&ag->restart_work, HZ / 2);
break;
}
@@ -1002,6 +1002,7 @@ static int ag71xx_tx_packets(struct ag71xx *ag, bool flush)
netdev_completed_queue(ag->dev, sent, bytes_compl);
if ((ring->curr - ring->dirty) < (ring_size * 3) / 4)
netif_wake_queue(ag->dev);
+ cancel_delayed_work(&ag->restart_work);
return sent;
}
@@ -1321,7 +1322,7 @@ static int ag71xx_probe(struct platform_device *pdev)
dev->netdev_ops = &ag71xx_netdev_ops;
dev->ethtool_ops = &ag71xx_ethtool_ops;
- INIT_WORK(&ag->restart_work, ag71xx_restart_work_func);
+ INIT_DELAYED_WORK(&ag->restart_work, ag71xx_restart_work_func);
init_timer(&ag->oom_timer);
ag->oom_timer.data = (unsigned long) dev;