commit 0fadb0597d240d4ed279042cab632d567510a1a3
author Jeff Kirsher <jeffrey.t.kirsher@intel.com> Thu Jan 12 16:51:05 2006 -0800
committer Jeff Garzik <jgarzik@pobox.com> Tue Jan 17 07:44:51 2006 -0500
tree 83786788f8bf5ef24b3b2cc871b84030c4d59fdf
parent 47028635d17c7b9c7ffc67499be5fed579bdfe72

[PATCH] e1000: Fix collision distance

Fixed the collision distance for 82543 controllers and newer.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/e1000/e1000_hw.c

diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index f79d2a0..ac227c7 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -1933,14 +1933,19 @@
 void
 e1000_config_collision_dist(struct e1000_hw *hw)
 {
-    uint32_t tctl;
+    uint32_t tctl, coll_dist;
 
     DEBUGFUNC("e1000_config_collision_dist");
 
+    if (hw->mac_type < e1000_82543)
+        coll_dist = E1000_COLLISION_DISTANCE_82542;
+    else
+        coll_dist = E1000_COLLISION_DISTANCE;
+
     tctl = E1000_READ_REG(hw, TCTL);
 
     tctl &= ~E1000_TCTL_COLD;
-    tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT;
+    tctl |= coll_dist << E1000_COLD_SHIFT;
 
     E1000_WRITE_REG(hw, TCTL, tctl);
     E1000_WRITE_FLUSH(hw);