[BNX2]: Disable parallel detect on an HP blade.

Because of some board issues, we need to disable parallel detect on
an HP blade.  Without this patch, the link state can become stuck
when it goes into parallel detect mode.

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

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 2fa258050968..35356fba5a71 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -5362,11 +5362,15 @@ bnx2_test_intr(struct bnx2 *bp)
         return -ENODEV;
 }
 
+/* Determining link for parallel detection. */
 static int
 bnx2_5706_serdes_has_link(struct bnx2 *bp)
 {
         u32 mode_ctl, an_dbg, exp;
 
+        if (bp->phy_flags & BNX2_PHY_FLAG_NO_PARALLEL)
+                return 0;
+
         bnx2_write_phy(bp, MII_BNX2_MISC_SHADOW, MISC_SHDW_MODE_CTL);
         bnx2_read_phy(bp, MII_BNX2_MISC_SHADOW, &mode_ctl);
 
@@ -7328,7 +7332,15 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
                         bp->flags |= BNX2_FLAG_NO_WOL;
                         bp->wol = 0;
                 }
-                if (CHIP_NUM(bp) != CHIP_NUM_5706) {
+                if (CHIP_NUM(bp) == CHIP_NUM_5706) {
+                        /* Don't do parallel detect on this board because of
+                         * some board problems.  The link will not go down
+                         * if we do parallel detect.
+                         */
+                        if (pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
+                            pdev->subsystem_device == 0x310c)
+                                bp->phy_flags |= BNX2_PHY_FLAG_NO_PARALLEL;
+                } else {
                         bp->phy_addr = 2;
                         if (reg & BNX2_SHARED_HW_CFG_PHY_2_5G)
                                 bp->phy_flags |= BNX2_PHY_FLAG_2_5G_CAPABLE;