netdev - [net-next 01/10] e1000: always call e1000_check_for_link() on e1000

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Message-Id: <1311300078-12876-2-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Thu, 21 Jul 2011 19:01:09 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Nicolas Schichan <nschichan@...ebox.fr>, netdev@...r.kernel.org,
	gospo@...hat.com, sassmann@...hat.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 01/10] e1000: always call e1000_check_for_link() on e1000_ce4100 MACs.

From: Nicolas Schichan <nschichan@...ebox.fr>

Interrupts about link lost or rx sequence errors are not reported by
the ce4100 hardware, leading to transitions from link UP to link DOWN
never being reported.

Signed-off-by: Nicolas Schichan <nschichan@...ebox.fr>
Tested-by:  Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/e1000/e1000_main.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index acaebec..f97afda 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2402,13 +2402,16 @@ bool e1000_has_link(struct e1000_adapter *adapter)
 	struct e1000_hw *hw = &adapter->hw;
 	bool link_active = false;
 
-	/* get_link_status is set on LSC (link status) interrupt or
-	 * rx sequence error interrupt.  get_link_status will stay
-	 * false until the e1000_check_for_link establishes link
-	 * for copper adapters ONLY
+	/* get_link_status is set on LSC (link status) interrupt or rx
+	 * sequence error interrupt (except on intel ce4100).
+	 * get_link_status will stay false until the
+	 * e1000_check_for_link establishes link for copper adapters
+	 * ONLY
 	 */
 	switch (hw->media_type) {
 	case e1000_media_type_copper:
+		if (hw->mac_type == e1000_ce4100)
+			hw->get_link_status = 1;
 		if (hw->get_link_status) {
 			e1000_check_for_link(hw);
 			link_active = !hw->get_link_status;
-- 
1.7.6

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