From: Sowmini Varadhan Date: Sun, 9 Nov 2014 01:42:10 +0000 (-0500) Subject: sunvnet: vnet_ack() should check if !start_cons to send a missed trigger X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=777362d7215f63318fc4a6fae9b320328d92e9f6;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git sunvnet: vnet_ack() should check if !start_cons to send a missed trigger As per comments in vnet_start_xmit, for the edge case when outgoing vnet_start_xmit() data and an incoming STOPPED ACK cross each other in flight, we may need to send the missed START trigger from maybe_tx_wakeup() after checking for a false value of start_cons Signed-off-by: Sowmini Varadhan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index deb395a82e50..826b3852c7df 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -572,7 +572,7 @@ static int vnet_ack(struct vnet_port *port, void *msgbuf) */ dr->cons = next_idx(end, dr); desc = vio_dring_entry(dr, dr->cons); - if (desc->hdr.state == VIO_DESC_READY && port->start_cons) { + if (desc->hdr.state == VIO_DESC_READY && !port->start_cons) { /* vnet_start_xmit() just populated this dring but missed * sending the "start" LDC message to the consumer. * Send a "start" trigger on its behalf.