[U-Boot] [PATCH] netloop: updates for NetLoop

[Heiko Schocher <hs@denx.de>]

Fix some issues introduced from commit:
2f70c49e5b9813635ad73666aa30f304c7fdeda9
suggested by Mike Frysinger.

- added some comment for the env_id variable in
  common/cmd_nvedit.c
- moved some variables in fn scope instead of
  file scope
- NetInitLoop now static void

Signed-off-by: Heiko Schocher <hs@denx.de>
---
 common/cmd_nvedit.c |    6 ++++++
 net/eth.c           |    5 ++---
 net/net.c           |    9 ++++-----
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 95eebb5..3caa841 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -75,6 +75,12 @@ DECLARE_GLOBAL_DATA_PTR;
 static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
 #define	N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))

+/*
+ * This variable is incremented on each do_setenv (), so it can
+ * be used as an indication, if the environment has changed or not.
+ * So it is possible to reread an environment variable only if the
+ * environment was changed ... done so for example in NetInitLoop()
+ */
 static int env_id = 1;

 int get_env_id (void)
diff --git a/net/eth.c b/net/eth.c
index 4bbf84b..a494912 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -57,9 +57,6 @@ int eth_setenv_enetaddr(char *name, const uchar *enetaddr)

 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)

-static char *act = NULL;
-static int  env_changed_id = 0;
-
 /*
  * CPU and board-specific Ethernet initializations.  Aliased function
  * signals caller to move on
@@ -471,6 +468,8 @@ void eth_try_another(int first_restart)
 #ifdef CONFIG_NET_MULTI
 void eth_set_current(void)
 {
+	static char *act = NULL;
+	static int  env_changed_id = 0;
 	struct eth_device* old_current;
 	int	env_id;

diff --git a/net/net.c b/net/net.c
index a89f6a0..a80c814 100644
--- a/net/net.c
+++ b/net/net.c
@@ -209,8 +209,6 @@ uchar		NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
 ulong		NetArpWaitTimerStart;
 int		NetArpWaitTry;

-int		env_changed_id = 0;
-
 void ArpRequest (void)
 {
 	int i;
@@ -278,15 +276,16 @@ void ArpTimeoutCheck(void)
 	}
 }

-int
+static void
 NetInitLoop(proto_t protocol)
 {
+	static int	env_changed_id = 0;
 	bd_t *bd = gd->bd;
 	int env_id = get_env_id ();

 	/* update only when the environment has changed */
 	if (env_changed_id == env_id)
-		return 0;
+		return;

 	switch (protocol) {
 #if defined(CONFIG_CMD_NFS)
@@ -347,7 +346,7 @@ NetInitLoop(proto_t protocol)
 		break;
 	}
 	env_changed_id = env_id;
-	return 0;
+	return;
 }

 /**********************************************************************/
-- 
1.6.0.6

-- 
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany