netdev - [PATCH net-2.6 4/8] bnx2x: Clear latch indication on link reset

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Date:	Mon, 1 Nov 2010 17:32:34 +0200
From:	"Yaniv Rosner" <yaniv.rosner@...adcom.com>
To:	davem@...emloft.net
cc:	netdev@...r.kernel.org, eilong@...adcom.com
Subject: [PATCH net-2.6 4/8] bnx2x: Clear latch indication on link reset

When using latch indication for link change notification, need to clear it when port is unloaded, otherwise it might generate false indication on next load.

Signed-off-by: Yaniv Rosner <yanivr@...adcom.com>
Signed-off-by: Eilon Greenstein <eilong@...adcom.com> 
---
 drivers/net/bnx2x/bnx2x_link.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/drivers/net/bnx2x/bnx2x_link.c b/drivers/net/bnx2x/bnx2x_link.c
index fc637ce..fdd7e03 100644
--- a/drivers/net/bnx2x/bnx2x_link.c
+++ b/drivers/net/bnx2x/bnx2x_link.c
@@ -6938,7 +6938,7 @@ u8 bnx2x_link_reset(struct link_params *params, struct link_vars *vars,
 		  u8 reset_ext_phy)
 {
 	struct bnx2x *bp = params->bp;
-	u8 phy_index, port = params->port;
+	u8 phy_index, port = params->port, clear_latch_ind = 0;
 	DP(NETIF_MSG_LINK, "Resetting the link of port %d\n", port);
 	/* disable attentions */
 	vars->link_status = 0;
@@ -6976,9 +6976,18 @@ u8 bnx2x_link_reset(struct link_params *params, struct link_vars *vars,
 				params->phy[phy_index].link_reset(
 					&params->phy[phy_index],
 					params);
+			if (params->phy[phy_index].flags &
+			    FLAGS_REARM_LATCH_SIGNAL)
+				clear_latch_ind = 1;
 		}
 	}
 
+	if (clear_latch_ind) {
+		/* Clear latching indication */
+		bnx2x_rearm_latch_signal(bp, port, 0);
+		bnx2x_bits_dis(bp, NIG_REG_LATCH_BC_0 + port*4,
+			       1 << NIG_LATCH_BC_ENABLE_MI_INT);
+	}
 	if (params->phy[INT_PHY].link_reset)
 		params->phy[INT_PHY].link_reset(
 			&params->phy[INT_PHY], params);
-- 
1.7.1




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