diff options
| author | Mian Yousaf Kaukab <ykaukab@suse.de> | 2021-03-18 09:50:26 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-18 19:22:04 +0100 |
| commit | 804741ac7b9f2fdebe3740cb0579cb8d94d49e60 (patch) | |
| tree | b580e071035b84c95386449762ab46e1dc29c6e0 /drivers/net/ethernet/socionext | |
| parent | ipv6: weaken the v4mapped source check (diff) | |
| download | linux-804741ac7b9f2fdebe3740cb0579cb8d94d49e60.tar.xz linux-804741ac7b9f2fdebe3740cb0579cb8d94d49e60.zip | |
netsec: restore phy power state after controller reset
Since commit 8e850f25b581 ("net: socionext: Stop PHY before resetting
netsec") netsec_netdev_init() power downs phy before resetting the
controller. However, the state is not restored once the reset is
complete. As a result it is not possible to bring up network on a
platform with Broadcom BCM5482 phy.
Fix the issue by restoring phy power state after controller reset is
complete.
Fixes: 8e850f25b581 ("net: socionext: Stop PHY before resetting netsec")
Cc: stable@vger.kernel.org
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/socionext')
| -rw-r--r-- | drivers/net/ethernet/socionext/netsec.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index 3c53051bdacf..200785e703c8 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -1715,14 +1715,17 @@ static int netsec_netdev_init(struct net_device *ndev) goto err1; /* set phy power down */ - data = netsec_phy_read(priv->mii_bus, priv->phy_addr, MII_BMCR) | - BMCR_PDOWN; - netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, data); + data = netsec_phy_read(priv->mii_bus, priv->phy_addr, MII_BMCR); + netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, + data | BMCR_PDOWN); ret = netsec_reset_hardware(priv, true); if (ret) goto err2; + /* Restore phy power state */ + netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, data); + spin_lock_init(&priv->desc_ring[NETSEC_RING_TX].lock); spin_lock_init(&priv->desc_ring[NETSEC_RING_RX].lock); |