diff options
| author | Mandeep Singh Baines <msb@google.com> | 2008-04-25 07:55:56 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-25 07:55:56 +0400 |
| commit | c5835df9716bdb1af8e25e9a452f717e54e02ed0 (patch) | |
| tree | 9c4a6c938ac864793089c044e9e131c84a177339 | |
| parent | 2db3e47e7080fde2a43d6312190d8229826b8e42 (diff) | |
| download | linux-c5835df9716bdb1af8e25e9a452f717e54e02ed0.tar.xz | |
ethtool: EEPROM dump no longer works for tg3 and natsemi
In the ethtool user-space application, tg3 and natsemi over-ride the
default implementation of dump_eeprom(). In both tg3_dump_eeprom() and
natsemi_dump_eeprom(), there is a magic number check which is not
present in the default implementation.
Commit b131dd5d ("[ETHTOOL]: Add support for large eeproms") snipped
the code which copied the ethtool_eeprom structure back to
user-space. tg3 and natsemi are over-writing the magic number field
and then checking it in user-space. With the ethtool_eeprom copy
removed, the check is failing.
The fix is simple. Add the ethtool_eeprom copy back.
Signed-off-by: Mandeep Singh Baines <msb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/ethtool.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c index a29b43d0b450..0133b5ebd545 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -323,6 +323,11 @@ static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) bytes_remaining -= eeprom.len; } + eeprom.len = userbuf - (useraddr + sizeof(eeprom)); + eeprom.offset -= eeprom.len; + if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) + ret = -EFAULT; + kfree(data); return ret; } |