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net: bcmgenet: Avoid sleeping in bcmgenet_timeout 

bcmgenet_timeout() executes in atomic context, yet we will invoke
napi_disable() which does sleep. Looking back at the changes, disabling
TX napi and re-enabling it is completely useless, since we reclaim all
TX buffers and re-enable interrupts, and wake up the TX queues.

Fixes: 13ea657806 ("net: bcmgenet: improve TX timeout")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2015-08-20 18:04:22 -07:00 committed by David S. Miller
parent c953e23936
commit eed635699a
1 changed files with 0 additions and 4 deletions
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4
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -2820,8 +2820,6 @@ static void bcmgenet_timeout(struct net_device *dev)
netif_dbg(priv, tx_err, dev, "bcmgenet_timeout\n");
bcmgenet_disable_tx_napi(priv);
for (q = 0; q < priv->hw_params->tx_queues; q++)
bcmgenet_dump_tx_queue(&priv->tx_rings[q]);
bcmgenet_dump_tx_queue(&priv->tx_rings[DESC_INDEX]);
@ -2837,8 +2835,6 @@ static void bcmgenet_timeout(struct net_device *dev)
bcmgenet_intrl2_0_writel(priv, int0_enable, INTRL2_CPU_MASK_CLEAR);
bcmgenet_intrl2_1_writel(priv, int1_enable, INTRL2_CPU_MASK_CLEAR);
bcmgenet_enable_tx_napi(priv);
dev->trans_start = jiffies;
dev->stats.tx_errors++;