modules: fix postinst generation for kernel modules

Fixes ticket #19352.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 45367

package/base-files/files/lib/functions.sh

@@ -154,10 +154,13 @@ config_list_foreach() {
 }
 
 insert_modules() {
-	[ -d /etc/modules.d ] && {
-		cd /etc/modules.d
-		sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
-	}
+	for m in $*; do
+		if [ -f /etc/modules.d/$m ]; then
+			sed 's/^[^#]/insmod &/' /etc/modules.d/$m | ash 2>&- || :
+		else
+			modprobe $m
+		fi
+	done
 }
 
 default_prerm() {