diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2019-10-17 21:29:26 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-10-18 10:22:04 -0700 |
| commit | 38b4fe320119859c11b1dc06f6b4987a16344fa1 (patch) | |
| tree | 4ae04c34ed6e6b86314e9aa25feda0c8eaa0bff0 | |
| parent | e381d2b4e25306140fdedfd802f0913b901a2d31 (diff) | |
| download | linux-stable-38b4fe320119859c11b1dc06f6b4987a16344fa1.tar.gz linux-stable-38b4fe320119859c11b1dc06f6b4987a16344fa1.tar.bz2 linux-stable-38b4fe320119859c11b1dc06f6b4987a16344fa1.zip | |
net: usb: lan78xx: Connect PHY before registering MAC
As soon as the netdev is registers, the kernel can start using the
interface. If the driver connects the MAC to the PHY after the netdev
is registered, there is a race condition where the interface can be
opened without having the PHY connected.
Change the order to close this race condition.
Fixes: 92571a1aae40 ("lan78xx: Connect phy early")
Reported-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/usb/lan78xx.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 58f5a219fb65..62948098191f 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -3782,10 +3782,14 @@ static int lan78xx_probe(struct usb_interface *intf, /* driver requires remote-wakeup capability during autosuspend. */ intf->needs_remote_wakeup = 1; + ret = lan78xx_phy_init(dev); + if (ret < 0) + goto out4; + ret = register_netdev(netdev); if (ret != 0) { netif_err(dev, probe, netdev, "couldn't register the device\n"); - goto out4; + goto out5; } usb_set_intfdata(intf, dev); @@ -3798,14 +3802,10 @@ static int lan78xx_probe(struct usb_interface *intf, pm_runtime_set_autosuspend_delay(&udev->dev, DEFAULT_AUTOSUSPEND_DELAY); - ret = lan78xx_phy_init(dev); - if (ret < 0) - goto out5; - return 0; out5: - unregister_netdev(netdev); + phy_disconnect(netdev->phydev); out4: usb_free_urb(dev->urb_intr); out3: |