From: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Date: Thu, 27 Dec 2007 06:39:54 +0000 (+0900)
Subject: common/cmd_mii.c: Add sanity argc check
X-Git-Tag: v1.3.2-rc1~100^2~49
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b9173af73e524d37c812f210173cf83385c5171a;p=oweals%2Fu-boot.git

common/cmd_mii.c: Add sanity argc check

If type mii command without arguments, we suffer from uninitialized argv[]
entries; for example we MIPS get stuck by TLB error.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
---

diff --git a/common/cmd_mii.c b/common/cmd_mii.c
index f530a38421..079612a4e6 100644
--- a/common/cmd_mii.c
+++ b/common/cmd_mii.c
@@ -438,6 +438,11 @@ int do_mii (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 	int		rcode = 0;
 	char		*devname;
 
+	if (argc < 2) {
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
 #if defined(CONFIG_8xx) || defined(CONFIG_MCF532x)
 	mii_init ();
 #endif