From: Joakim Tjernlund Date: Fri, 12 Nov 2010 03:55:08 +0000 (+0000) Subject: ucc_geth: Do not bring the whole IF down when TX failure. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2040bd57b5f0c52dc4503e0e960b1dcafaf30a8b;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git ucc_geth: Do not bring the whole IF down when TX failure. 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 Reviewed-by: Anton Vorontsov Signed-off-by: David S. Miller --- diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index a4c3f570824..cf6653f71d2 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); } @@ -3550,7 +3547,10 @@ 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); @@ -3579,8 +3579,12 @@ 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); @@ -3594,7 +3598,6 @@ 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); }