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| author | Martin Langer <martin-langer@gmx.de> | 2008-10-13 18:49:38 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-13 18:49:38 -0700 |
| commit | bc0da3fcec1cec11dc451b8fcb9c9ad7e4ca6e12 (patch) | |
| tree | 00aa6f51673afe88d316041e562fe7e2cf414e6a /drivers/net/tulip/de2104x.c | |
| parent | ebe05d06a5051e7ddc07d76eab541a1d6b6eafcd (diff) | |
| download | linux-bc0da3fcec1cec11dc451b8fcb9c9ad7e4ca6e12.tar.gz linux-bc0da3fcec1cec11dc451b8fcb9c9ad7e4ca6e12.tar.bz2 linux-bc0da3fcec1cec11dc451b8fcb9c9ad7e4ca6e12.zip | |
de2104x: wrong MAC address fix
The de2104x returns sometimes a wrong MAC address. The wrong one is
like the original one, but it comes with an one byte shift. I found
this bug on an older alpha ev5 cpu. More details are available in Gentoo
bugreport #240718.
It seems the hardware is sometimes a little bit too slow for an
immediate access. This patch solves the problem by introducing a small
udelay.
Signed-off-by: Martin Langer <martin-langer@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tulip/de2104x.c')
| -rw-r--r-- | drivers/net/tulip/de2104x.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/tulip/de2104x.c b/drivers/net/tulip/de2104x.c index f54c45049d50..124d5d690dde 100644 --- a/drivers/net/tulip/de2104x.c +++ b/drivers/net/tulip/de2104x.c @@ -1688,6 +1688,7 @@ static void __devinit de21040_get_mac_address (struct de_private *de) unsigned i; dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */ + udelay(5); for (i = 0; i < 6; i++) { int value, boguscnt = 100000; |