diff options
| author | David S. Miller <davem@davemloft.net> | 2008-11-26 23:48:40 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-26 23:48:40 -0800 |
| commit | 5b9ab2ec04ec1e1e53939768805612ac191d7ba2 (patch) | |
| tree | 22d29905c148d2d743b3eccb585fbe60fb91e25a /drivers/net/phy/phy_device.c | |
| parent | 851fd7bd88524bb4e20f3def3127cd9167d6d0cf (diff) | |
| parent | 3ec192559033ed457f0d7856838654c100fc659f (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/hp-plus.c
drivers/net/wireless/ath5k/base.c
drivers/net/wireless/ath9k/recv.c
net/wireless/reg.c
Diffstat (limited to 'drivers/net/phy/phy_device.c')
| -rw-r--r-- | drivers/net/phy/phy_device.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index b344a0b55db..29546a20604 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -227,8 +227,17 @@ struct phy_device * get_phy_device(struct mii_bus *bus, int addr) if (r) return ERR_PTR(r); - /* If the phy_id is all Fs or all 0s, there is no device there */ - if ((0xffff == phy_id) || (0x00 == phy_id)) + /* If the phy_id is mostly Fs, there is no device there */ + if ((phy_id & 0x1fffffff) == 0x1fffffff) + return NULL; + + /* + * Broken hardware is sometimes missing the pull down resistor on the + * MDIO line, which results in reads to non-existent devices returning + * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent + * device as well. + */ + if (phy_id == 0) return NULL; dev = phy_device_create(bus, addr, phy_id); |