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authorMandeep Singh Baines <msb@google.com>2008-04-24 20:55:56 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-24 20:55:56 -0700
commitc5835df9716bdb1af8e25e9a452f717e54e02ed0 (patch)
tree9c4a6c938ac864793089c044e9e131c84a177339 /net/core/ethtool.c
parent2db3e47e7080fde2a43d6312190d8229826b8e42 (diff)
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>
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index a29b43d0b45..0133b5ebd54 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;
}