diff options
| author | Marcus Sundberg <marcus@ingate.com> | 2008-07-10 21:28:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-08-20 11:15:44 -0700 |
| commit | 2d72ac97f97ea85db7d1d78b75f4943aedd7af61 (patch) | |
| tree | cc246341f212a5ace6db476beecf161720e0e9b3 /drivers | |
| parent | 194819c48a49a6a748ce892fade81ef21934b892 (diff) | |
r8169: avoid thrashing PCI conf space above RTL_GIGA_MAC_VER_06
commit 77332894c21165404496c56763d7df6c15c4bb09 upstream
The magic write to register 0x82 will often cause PCI config space on
my 8168 (PCI ID 10ec:8168, revision 2. mounted in an LG P300 laptop)
to be filled with ones during driver load, and thus breaking NIC
operation until reboot. If it does not happen on first driver load it
can easily be reproduced by unloading and loading the driver a few
times.
The magic write was added long ago by this commit:
Author: François Romieu <romieu@fr.zoreil.com>
Date: Sat Jan 10 06:00:46 2004 -0500
[netdrvr r8169] Merge of changes done by Realtek to rtl8169_init_one():
- phy capability settings allows lower or equal capability as suggested
in Realtek's changes;
- I/O voodoo;
- no need to s/mdio_write/RTL8169_WRITE_GMII_REG/;
- s/rtl8169_hw_PHY_config/rtl8169_hw_phy_config/;
- rtl8169_hw_phy_config(): ad-hoc struct "phy_magic" to limit duplication
of code (yep, the u16 -> int conversions should work as expected);
- variable renames and whitepace changes ignored.
As the 8168 wasn't supported by that version this patch simply removes
the bogus write from mac versions <= RTL_GIGA_MAC_VER_06.
[The change above makes sense for the 8101/8102 too -- Ueimor]
Signed-off-by: Marcus Sundberg <marcus@ingate.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/r8169.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 65724250462..42d7c0a3847 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -1438,8 +1438,10 @@ static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp) rtl_hw_phy_config(dev); - dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n"); - RTL_W8(0x82, 0x01); + if (tp->mac_version <= RTL_GIGA_MAC_VER_06) { + dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n"); + RTL_W8(0x82, 0x01); + } pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40); |