[PATCH v3 4/6] tools/bootconfig: Fix tracing_on option checking in ftrace2bconf.sh

[Masami Hiramatsu]

Since tracing_on indicates only "1" (default) or "0", ftrace2bconf.sh
only need to check the value is "0".

Fixes: 55ed4560774d ("tools/bootconfig: Add tracing_on support to helper scripts")
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
---
 tools/bootconfig/scripts/ftrace2bconf.sh |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/bootconfig/scripts/ftrace2bconf.sh b/tools/bootconfig/scripts/ftrace2bconf.sh
index fbaf07dc91bf..6183b36c6846 100755
--- a/tools/bootconfig/scripts/ftrace2bconf.sh
+++ b/tools/bootconfig/scripts/ftrace2bconf.sh
@@ -239,8 +239,8 @@ instance_options() { # [instance-name]
 		emit_kv $PREFIX.cpumask = $val
 	fi
 	val=`cat $INSTANCE/tracing_on`
-	if [ `echo $val | sed -e s/f//g`x != x ]; then
-		emit_kv $PREFIX.tracing_on = $val
+	if [ "$val" = "0" ]; then
+		emit_kv $PREFIX.tracing_on = 0
 	fi
 
 	val=`cat $INSTANCE/current_tracer`