diff mbox

[net-next-2.6,15/23] e1000e: provide comment for 82571 workaround

Message ID 20091121092623.5715.76622.stgit@localhost.localdomain
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Kirsher, Jeffrey T Nov. 21, 2009, 9:26 a.m. UTC 
From: Bruce Allan <bruce.w.allan@intel.com>

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

 drivers/net/e1000e/82571.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)


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diff mbox

Patch

diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 7cdf176..0e8aa34 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);