base-files: do not write to /etc/config/wireless at boot time unless a new interface...

eliminates unnecessary flash write cycles at every boot

patch by Peter Wagner (tripolar)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27127 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/files/etc/init.d/network b/package/base-files/files/etc/init.d/network
index c2095a4..fc51221 100755 (executable)
--- a/package/base-files/files/etc/init.d/network
+++ b/package/base-files/files/etc/init.d/network
@@ -9,11 +9,14 @@ boot() {
 
        include /lib/network
        setup_switch
-       /sbin/wifi detect >> /etc/config/wireless
+
+       /sbin/wifi detect > /tmp/wireless.tmp
+       [ -s /tmp/wireless.tmp ] && {
+               cat /tmp/wireless.tmp >> /etc/config/wireless
+       }
+       rm -f /tmp/wireless.tmp
        grep -qs config /etc/config/wireless && {
                /sbin/wifi up
-       } || {
-               rm -f /etc/config/wireless
        }
 
        scan_interfaces