netdev - [PATCH v2] davinci_emac: Add Carrier Link OK check in Davinci RX Handler

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Message-Id: <1298880920-22715-1-git-send-email-vinay.hegde@ti.com>
Date:	Mon, 28 Feb 2011 13:45:20 +0530
From:	"Hegde, Vinay" <vinay.hegde@...com>
To:	netdev@...r.kernel.org
Cc:	khilman@...com, davinci-linux-open-source@...ux.davincidsp.com,
	linux-arm-kernel@...ts.infradead.org,
	"Hegde, Vinay" <vinay.hegde@...com>
Subject: [PATCH v2] davinci_emac: Add Carrier Link OK check in Davinci RX Handler

This patch adds an additional check in the Davinci EMAC RX Handler,
which tests the __LINK_STATE_NOCARRIER flag along with the
__LINK_STATE_START flag as part EMAC shutting down procedure.

This avoids
WARNING: at drivers/net/davinci_emac.c:1040 emac_rx_handler+0xf8/0x120()
during rtcwake used to suspend the target for a specified duration.

Signed-off-by: Hegde, Vinay <vinay.hegde@...com>
Acked-by: Cyril Chemparathy <cyril@...com>
---
since v1: Changed the subject line

 drivers/net/davinci_emac.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 2a628d1..7018bfe 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -1008,7 +1008,7 @@ static void emac_rx_handler(void *token, int len, int status)
 	int			ret;
 
 	/* free and bail if we are shutting down */
-	if (unlikely(!netif_running(ndev))) {
+	if (unlikely(!netif_running(ndev) || !netif_carrier_ok(ndev))) {
 		dev_kfree_skb_any(skb);
 		return;
 	}
-- 
1.7.1

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