diff options
| author | Grant Grundler <grundler@google.com> | 2011-11-15 11:12:40 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-11-16 01:26:06 +0400 |
| commit | a77929a278651d4451c872178d4d7aac8908aa8e (patch) | |
| tree | e80174550dcea0e16d6555cbd8c9097dfc15d6f2 | |
| parent | 3486140e30fcc16c0b8cd9545fbe5e2e66bf6941 (diff) | |
| download | linux-a77929a278651d4451c872178d4d7aac8908aa8e.tar.xz | |
net-next:asix:poll in asix_get_phyid in case phy not ready
Sometimes the phy isn't ready after reset...poll and pray it will be soon.
Signed-off-by: Freddy Xin <freddy@asix.com.tw>
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/usb/asix.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c index 873860d46e9e..b4675e89e42c 100644 --- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -652,9 +652,17 @@ static u32 asix_get_phyid(struct usbnet *dev) { int phy_reg; u32 phy_id; + int i; - phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1); - if (phy_reg < 0) + /* Poll for the rare case the FW or phy isn't ready yet. */ + for (i = 0; i < 100; i++) { + phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1); + if (phy_reg != 0 && phy_reg != 0xFFFF) + break; + mdelay(1); + } + + if (phy_reg <= 0 || phy_reg == 0xFFFF) return 0; phy_id = (phy_reg & 0xffff) << 16; |