calling of prom_detect_board is needed only when we still don't know the board

SVN-Revision: 7736

target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c

@@ -206,7 +206,7 @@ static struct adm5120_board __initdata adm5120_boards[] = {
 		.name		= "Infineon EASY 83000",
 		.mach_type	= MACH_ADM5120_EASY83000,
 		.has_usb	= 0,
-		.iface_num	= 0,
+		.iface_num	= 6,
 		.flash0_size	= 4*1024*1024,
 	},
 	{
@@ -880,7 +880,8 @@ static void __init adm5120_detect_board(void)
 		if (t == MACH_ADM5120_UNKNOWN)
 			t = uboot_detect_board();
 	} else {
-		t = prom_detect_board();
+		if (t == MACH_ADM5120_UNKNOWN)
+			t = prom_detect_board();
 	}
 
 	for (board = adm5120_boards; board->mach_type != MACH_ADM5120_UNKNOWN;

target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c

@@ -32,7 +32,7 @@
 
 #include <asm/mach-adm5120/adm5120_info.h>
 
-static char **prom_envp;
+static char **prom_envp = NULL;
 
 void setup_prom_printf(int);
 void prom_printf(char *, ...);
@@ -106,7 +106,9 @@ void __init prom_init(void)
 {
 	char *cmd;
 
-	prom_envp = (char **)fw_arg2;
+	if ((fw_arg2 & 3) == 0) {
+		prom_envp = (char **)fw_arg2;
+	}
 
 	adm5120_info_init();