ucc_geth_close lacks a cancel_work_sync(&ugeth->timeout_work)
to stop any outstanding processing of TX fail. However, one
can not call cancel_work_sync without fixing the timeout function
otherwise it will deadlock. This patch brings ucc_geth in line with
gianfar:
Don't bring the interface down and up, just reinit controller HW
and PHY.
Signed-off-by: Joakim Tjernlund <joakim.tjernl...@transmode.se>
---
drivers/net/ucc_geth.c | 15 +++++++++------
1 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 97f9f7d..6c254ed 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -2065,9 +2065,6 @@ static void ucc_geth_stop(struct ucc_geth_private *ugeth)
/* Disable Rx and Tx */
clrbits32(&ug_regs->maccfg1, MACCFG1_ENABLE_RX | MACCFG1_ENABLE_TX);
- phy_disconnect(ugeth->phydev);
- ugeth->phydev = NULL;
-
ucc_geth_memclean(ugeth);
}
@@ -3556,7 +3553,10 @@ static int ucc_geth_close(struct net_device *dev)
napi_disable(&ugeth->napi);
+ cancel_work_sync(&ugeth->timeout_work);
ucc_geth_stop(ugeth);
+ phy_disconnect(ugeth->phydev);
+ ugeth->phydev = NULL;
free_irq(ugeth->ug_info->uf_info.irq, ugeth->ndev);
@@ -3585,8 +3585,12 @@ static void ucc_geth_timeout_work(struct work_struct
*work)
* Must reset MAC *and* PHY. This is done by reopening
* the device.
*/
- ucc_geth_close(dev);
- ucc_geth_open(dev);
+ netif_tx_stop_all_queues(dev);
+ ucc_geth_stop(ugeth);
+ ucc_geth_init_mac(ugeth);
+ /* Must start PHY here */
+ phy_start(ugeth->phydev);
+ netif_tx_start_all_queues(dev);
}
netif_tx_schedule_all(dev);
@@ -3600,7 +3604,6 @@ static void ucc_geth_timeout(struct net_device *dev)
{
struct ucc_geth_private *ugeth = netdev_priv(dev);
- netif_carrier_off(dev);
schedule_work(&ugeth->timeout_work);
}
--
1.7.2.2
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