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

From: Greg Kroah-Hartman
Date: Thu Oct 18 2012 - 23:22:41 EST


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

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

From: Matt Carlson <mcarlson@xxxxxxxxxxxx>

commit b7abee6ef888117f92db370620ebf116a38e3f4d upstream.

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

Signed-off-by: Matt Carlson <mcarlson@xxxxxxxxxxxx>
Tested-by: Christian Kujau <lists@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Mike Pagano <mpagano@xxxxxxxxxx>

---
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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