4.9-stable review patch. If anyone has any objections, please let me know.
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From: Michael Chan michael.chan@broadcom.com
[ 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 --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1498,12 +1498,16 @@ static int bnxt_async_event_process(stru
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 */