From ac3241d5c81bf6e85095481435f29a4627ff820e Mon Sep 17 00:00:00 2001 From: Hemanth Puranik Date: Mon, 18 Dec 2017 11:27:47 +0530 Subject: net: qcom/emac: Change the order of mac up and sgmii open This patch fixes the order of mac_up and sgmii_open for the reasons noted below: - If open takes more time(if the SGMII block is not responding or if we want to do some delay based task) in this situation we will hit NETDEV watchdog - The main reason : We should signal to upper layers that we are ready to receive packets "only" when the entire path is initialized not the other way around, this is followed in the reset path where we do mac_down, sgmii_reset and mac_up. This also makes the driver uniform across the reset and open paths. - In the future there may be need for delay based tasks to be done in sgmii open which will result in NETDEV watchdog - As per the documentation the order of init should be sgmii, mac, rings and DMA Signed-off-by: Hemanth Puranik Acked-by: Timur Tabi Signed-off-by: David S. Miller --- drivers/net/ethernet/qualcomm/emac/emac.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/net/ethernet/qualcomm') diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c index 70c92b649b29..38c924bdd32e 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac.c +++ b/drivers/net/ethernet/qualcomm/emac/emac.c @@ -253,18 +253,18 @@ static int emac_open(struct net_device *netdev) return ret; } - ret = emac_mac_up(adpt); + ret = adpt->phy.open(adpt); if (ret) { emac_mac_rx_tx_rings_free_all(adpt); free_irq(irq->irq, irq); return ret; } - ret = adpt->phy.open(adpt); + ret = emac_mac_up(adpt); if (ret) { - emac_mac_down(adpt); emac_mac_rx_tx_rings_free_all(adpt); free_irq(irq->irq, irq); + adpt->phy.close(adpt); return ret; } -- cgit v1.2.3-59-g8ed1b