From efd9bb9c0286dace970397e3336cf0399dc7b31d Mon Sep 17 00:00:00 2001
From: Suriyan Ramasami <suriyan.r@gmail.com>
Date: Wed, 16 Oct 2013 09:54:24 -0700
Subject: [PATCH] netconsole loses 2nd character of input

Netconsole loses the second character when used as input by
either setenv stdin nc or setenv stdin serial,nc if using CONSOLE_CONSOLE_MUX

Before a nc_send_packet() to echo the input, a check is done to see if
nc_ether is valid. If its not, it waits for an arp request and then sends
the packet (which contains the first character of line to be displayed as
output). As part of reaping the arp request, the second character is consumed.
We protect this by making the call to NetLoop(NETCONS) between
input_recursion.

Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
 drivers/net/netconsole.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index df8ab07b94..65c747e14b 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -184,7 +184,9 @@ static void nc_send_packet(const char *buf, int len)
 			return;	/* inside net loop */
 		output_packet = buf;
 		output_packet_len = len;
+		input_recursion = 1;
 		NetLoop(NETCONS); /* wait for arp reply and send packet */
+		input_recursion = 0;
 		output_packet_len = 0;
 		return;
 	}
-- 
2.39.5