bnx2x: Fix incorrect link-up report

Fix a problem where link is reported to be up when SFP+ module is plugged in
without cable. This occurs with specific module types which may generate
temporary TX_FAULT indication. Solution is to avoid changing any link parameters
when checking TX_FAULT indication while physical link is down.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 68417e1fb6df..998cce36340c 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -13360,6 +13360,10 @@ static u8 bnx2x_analyze_link_error(struct link_params *params,
         DP(NETIF_MSG_LINK, "Link changed:[%x %x]->%x\n", vars->link_up,
            old_status, status);
 
+        /* Do not touch the link in case physical link down */
+        if ((vars->phy_flags & PHY_PHYSICAL_LINK_FLAG) == 0)
+                return 1;
+
         /* a. Update shmem->link_status accordingly
          * b. Update link_vars->link_up
          */