util: correctly parse shorter linux version numbers.

The next version of Linux might be 3.0.  If it is, get_linux_version
will fail.
So make it more robust.

Reported-by: Namhyung Kim <namhyung@gmail.com>
Reported-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/util.c b/util.c
index 10bbe56..55d171a 100644
--- a/util.c
+++ b/util.c
@@ -146,16 +146,16 @@ int get_linux_version()
 {
 	struct utsname name;
 	char *cp;
-	int a,b,c;
+	int a = 0, b = 0,c = 0;
 	if (uname(&name) <0)
 		return -1;
 
 	cp = name.release;
 	a = strtoul(cp, &cp, 10);
-	if (*cp != '.') return -1;
-	b = strtoul(cp+1, &cp, 10);
-	if (*cp != '.') return -1;
-	c = strtoul(cp+1, NULL, 10);
+	if (*cp == '.')
+		b = strtoul(cp+1, &cp, 10);
+	if (*cp == '.')
+		c = strtoul(cp+1, &cp, 10);
 
 	return (a*1000000)+(b*1000)+c;
 }