bnxt_en: Ignore 0 value in autoneg supported speed from firmware.

In some situations, the firmware will return 0 for autoneg supported
speed.  This may happen if the firmware detects no SFP module, for
example.  The driver should ignore this so that we don't end up with
an invalid autoneg setting with nothing advertised.  When SFP module
is inserted, we'll get the updated settings from firmware at that time.

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

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 869d4c97a9e847b9905b70567dafb1ac5c5f6125..32de4589d16a2cde27f2e5674b234e2b7185f00d 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -5511,8 +5511,9 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
                bp->lpi_tmr_hi = le32_to_cpu(resp->valid_tx_lpi_timer_high) &
                                 PORT_PHY_QCAPS_RESP_TX_LPI_TIMER_HIGH_MASK;
        }
-       link_info->support_auto_speeds =
-               le16_to_cpu(resp->supported_speeds_auto_mode);
+       if (resp->supported_speeds_auto_mode)
+               link_info->support_auto_speeds =
+                       le16_to_cpu(resp->supported_speeds_auto_mode);
 
 hwrm_phy_qcaps_exit:
        mutex_unlock(&bp->hwrm_cmd_lock);