linux-kernel - [ 19/37] tg3: Apply short DMA frag workaround to 5906

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Date:	Thu, 18 Oct 2012 20:16:42 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Matt Carlson <mcarlson@...adcom.com>,
	Christian Kujau <lists@...dbynature.de>,
	"David S. Miller" <davem@...emloft.net>,
	Mike Pagano <mpagano@...too.org>
Subject: [ 19/37] tg3: Apply short DMA frag workaround to 5906

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matt Carlson <mcarlson@...adcom.com>

commit b7abee6ef888117f92db370620ebf116a38e3f4d upstream.

5906 devices also need the short DMA fragment workaround.  This patch
makes the necessary change.

Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Tested-by: Christian Kujau <lists@...dbynature.de>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Mike Pagano <mpagano@...too.org>

---
 drivers/net/tg3.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -13689,8 +13689,9 @@ static int __devinit tg3_get_invariants(
 	 */
 	tg3_flag_set(tp, 4G_DMA_BNDRY_BUG);
 
-	if (tg3_flag(tp, 5755_PLUS))
-		tg3_flag_set(tp, SHORT_DMA_BUG);
+	if (tg3_flag(tp, 5755_PLUS) ||
+		GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
+			tg3_flag_set(tp, SHORT_DMA_BUG);
 	else
 		tg3_flag_set(tp, 40BIT_DMA_LIMIT_BUG);
 


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