netdev - [PATCHv1] net-bnx2x: Force link UP when the interface is in LOOPBACK mode

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Message-Id: <1359565212-11104-1-git-send-email-maheshb@google.com>
Date:	Wed, 30 Jan 2013 09:00:12 -0800
From:	Mahesh Bandewar <maheshb@...gle.com>
To:	Eilon Greenstein <eilong@...adcom.com>,
	Yaniv <yanivr@...adcom.com>, David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Mahesh Bandewar <maheshb@...gle.com>
Subject: [PATCHv1] net-bnx2x: Force link UP when the interface is in LOOPBACK mode

When the interface does not have carrier but when it's put into
loopback mode (for tests), it does not make sense to not have
the carrier. So force it!

Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
---
v1.0 : Added check to ensure it's not forced in LOOPBACK_EXT mode.

 drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 859df751345e..c6da77fa9d07 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -4748,6 +4748,12 @@ void bnx2x_link_status_update(struct link_params *params,
 	vars->link_status = REG_RD(bp, params->shmem_base +
 				   offsetof(struct shmem_region,
 					    port_mb[port].link_status));
+
+	/* Force link UP in non LOOPBACK_EXT loopback mode(s) */
+	if (bp->link_params.loopback_mode != LOOPBACK_NONE &&
+	    bp->link_params.loopback_mode != LOOPBACK_EXT)
+		vars->link_status |= LINK_STATUS_LINK_UP;
+
 	if (bnx2x_eee_has_cap(params))
 		vars->eee_status = REG_RD(bp, params->shmem2_base +
 					  offsetof(struct shmem2_region,
-- 
1.8.1

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