[TG3]: Fix link problem on Dell's onboard 5906.

The bug is caused by code that always set
(TG3_FLAG_USE_MI_INTERRUPT | TG3_FLAG_USE_LINKCHG_REG) on all Dell's
onboard devices.  With these 2 flags set, the link status is polled
by tg3_timer() and will only work when the PHY is set up to interrupt
the MAC on link changes.  This breaks 5906 because the 5906 PHY does
not support TG3_FLAG_USE_MI_INTERRUPT the same as other PHYs.

For correctness, only Dell's onboard 5701 needs these 2 flags to be
set.  This change will fix the 5906 problem and will change other
Dell devices except 5700 and 5701 to use the more efficient
interrupt-driven link changes.

Update version to 3.77.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 023779a581fd14609f5d66be52315d9f47f2a036..2f3184184ad9b201c82d5c38260de72d4a5f2d6a 100644 (file)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -64,8 +64,8 @@
 
 #define DRV_MODULE_NAME                "tg3"
 #define PFX DRV_MODULE_NAME    ": "
-#define DRV_MODULE_VERSION     "3.76"
-#define DRV_MODULE_RELDATE     "May 5, 2007"
+#define DRV_MODULE_VERSION     "3.77"
+#define DRV_MODULE_RELDATE     "May 31, 2007"
 
 #define TG3_DEF_MAC_MODE       0
 #define TG3_DEF_RX_MODE                0
@@ -10961,6 +10961,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
         * upon subsystem IDs.
         */
        if (tp->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 &&
            !(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)) {
                tp->tg3_flags |= (TG3_FLAG_USE_MI_INTERRUPT |
                                  TG3_FLAG_USE_LINKCHG_REG);