bnxt_en: Don't print "Link speed -1 no longer supported" messages.

[ Upstream commit a8168b6cee6e9334dfebb4b9108e8d73794f6088 ]

On some dual port NICs, the 2 ports have to be configured with compatible
link speeds.  Under some conditions, a port's configured speed may no
longer be supported.  The firmware will send a message to the driver
when this happens.

Improve this logic that prints out the warning by only printing it if
we can determine the link speed that is no longer supported.  If the
speed is unknown or it is in autoneg mode, skip the warning message.

Reported-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Tested-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index b66689a6eac0f221f57dd67e35b4e15149ebc22b..807cf75f0a98d56093c7a2c020900f37b3efb9ed 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1698,12 +1698,16 @@ static int bnxt_async_event_process(struct bnxt *bp,
 
                if (BNXT_VF(bp))
                        goto async_event_process_exit;
-               if (data1 & 0x20000) {
+
+               /* print unsupported speed warning in forced speed mode only */
+               if (!(link_info->autoneg & BNXT_AUTONEG_SPEED) &&
+                   (data1 & 0x20000)) {
                        u16 fw_speed = link_info->force_link_speed;
                        u32 speed = bnxt_fw_to_ethtool_speed(fw_speed);
 
-                       netdev_warn(bp->dev, "Link speed %d no longer supported\n",
-                                   speed);
+                       if (speed != SPEED_UNKNOWN)
+                               netdev_warn(bp->dev, "Link speed %d no longer supported\n",
+                                           speed);
                }
                set_bit(BNXT_LINK_SPEED_CHNG_SP_EVENT, &bp->sp_event);
                /* fall thru */