parport_pc.c: use correct length in strncmp

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index 2597145..ad113b0 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -3403,7 +3403,7 @@
 		*val = automatic;
 	else if (!strncmp(s, "none", 4))
 		*val = none;
-	else if (nofifo && !strncmp(s, "nofifo", 4))
+	else if (nofifo && !strncmp(s, "nofifo", 6))
 		*val = nofifo;
 	else {
 		char *ep;