Fix incorrect use of getenv() before relocation

A large number of boards incorrectly used getenv() in their board init
code running before relocation.  In some cases this caused U-Boot to
hang when certain environment variables grew too long.
Fix the code to use getenv_r().

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: The LEOX team <team@leox.org>
Cc: Michael Schwingen <michael@schwingen.org>
Cc: Georg Schardt <schardt@team-ctech.de>
Cc: Werner Pfister <Pfister_Werner@intercontrol.de>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Peter De Schrijver <p2@mind.be>
Cc: John Zhan <zhanz@sinovee.com>
Cc: Rishi Bhattacharya <rishi@ti.com>
Cc: Peter Tyser <ptyser@xes-inc.com>

1 files changed, 11 insertions, 8 deletions

diff --git a/board/tqc/tqm85xx/tqm85xx.c b/board/tqc/tqm85xx/tqm85xx.c
index 99b13311ce..8fb73abde7 100644
--- a/board/tqc/tqm85xx/tqm85xx.c
+++ b/board/tqc/tqm85xx/tqm85xx.c
@@ -227,17 +227,19 @@ static const int casl_table[] = { 20, 25, 30 };
 
 int cas_latency (void)
 {
-	char *s = getenv ("serial#");
+	char buf[128];
 	int casl;
 	int val;
 	int i;
 
 	casl = CONFIG_DDR_DEFAULT_CL;
 
-	if (s != NULL) {
-		if (strncmp(s + strlen (s) - strlen (CASL_STRING1),
+	i = getenv_f("serial#", buf, sizeof(buf));
+
+	if (i >0) {
+		if (strncmp(buf + strlen (buf) - strlen (CASL_STRING1),
 			    CASL_STRING2, strlen (CASL_STRING2)) == 0) {
-			val = simple_strtoul (s + strlen (s) - 2, NULL, 10);
+			val = simple_strtoul (buf + strlen (buf) - 2, NULL, 10);
 
 			for (i = 0; i < N_CASL; ++i) {
 				if (val == casl_table[i]) {
@@ -252,12 +254,13 @@ int cas_latency (void)
 
 int checkboard (void)
 {
-	char *s = getenv ("serial#");
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
 
 	printf ("Board: %s", CONFIG_BOARDNAME);
-	if (s != NULL) {
-		puts (", serial# ");
-		puts (s);
+	if (i > 0) {
+		puts(", serial# ");
+		puts(buf);
 	}
 	putc ('\n');