diff options
| author | Bruce Allan <bruce.w.allan@intel.com> | 2009-11-20 23:26:24 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-21 11:34:14 -0800 |
| commit | 84efb7b968ab91d0099620865b3f563eb0ddf5a6 (patch) | |
| tree | 03de89614de2b041320e54cc74727293d1ff0b47 /drivers/net/e1000e/82571.c | |
| parent | fe4016746d2c0b3b690f5d1921c826d14008b118 (diff) | |
e1000e: provide comment for 82571 workaround
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e/82571.c')
| -rw-r--r-- | drivers/net/e1000e/82571.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index 7cdf1768afac..0e8aa3441b97 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1114,6 +1114,13 @@ static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw) reg |= (1 << 22); ew32(GCR, reg); + /* + * Workaround for hardware errata. + * apply workaround for hardware errata documented in errata + * docs Fixes issue where some error prone or unreliable PCIe + * completions are occurring, particularly with ASPM enabled. + * Without fix, issue can cause tx timeouts. + */ reg = er32(GCR2); reg |= 1; ew32(GCR2, reg); |