[pxcab] preinit: use grep -q where applicable

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19484 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/pxcab/base-files/lib/preinit/45_failsafe_pxcab b/target/linux/pxcab/base-files/lib/preinit/45_failsafe_pxcab
index 9739277..dd7330d 100644 (file)
--- a/target/linux/pxcab/base-files/lib/preinit/45_failsafe_pxcab
+++ b/target/linux/pxcab/base-files/lib/preinit/45_failsafe_pxcab
@@ -4,7 +4,7 @@
 
 failsafe_wait() {
     FAILSAFE=
-    grep 'failsafe=' /proc/cmdline > /dev/null && FAILSAFE=true && export FAILSAFE
+    grep -q 'failsafe=' /proc/cmdline && FAILSAFE=true && export FAILSAFE
     if [ "$FAILSAFE" != "true" ]; then
         preinit_net_echo "Please press button now to enter failsafe"
         echo -n "Press "