modutils-initscripts: improve modutils.sh

modutils.sh reads /etc/modules to load the listed modules at boot time.
/etc/modules is generated by update-modules which scans
/etc/modules-load.d directory. However, update-modules became obsolete
because the files it generates are not used by modprobe anymore.

Hence, change modutils.sh to scan also /etc/modules-load.d/*.conf and
load the modules listed there.

Basically, the behavior is this:
 * if /etc/modules exists, load those modules;
 * if the directory /etc/modules-load.d exists, load the modules listed
   in the .conf files but ignore those already loaded (from
   /etc/modules);

[YOCTO #3598]

(From OE-Core rev: f2d6e84cb1694e2365beca331439bb2d23843a5b)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 25 insertions, 9 deletions

diff --git a/meta/recipes-kernel/modutils-initscripts/files/modutils.sh b/meta/recipes-kernel/modutils-initscripts/files/modutils.sh
index 9049bbb8aa..a78adf5729 100755
--- a/meta/recipes-kernel/modutils-initscripts/files/modutils.sh
+++ b/meta/recipes-kernel/modutils-initscripts/files/modutils.sh
@@ -13,7 +13,7 @@
 
 LOAD_MODULE=modprobe
 [ -f /proc/modules ] || exit 0
-[ -f /etc/modules ] || exit 0
+[ -f /etc/modules ] || [ -d /etc/modules-load.d ] || exit 0
 [ -e /sbin/modprobe ] || LOAD_MODULE=insmod
 
 if [ ! -f /lib/modules/`uname -r`/modules.dep ]; then
@@ -21,15 +21,31 @@ if [ ! -f /lib/modules/`uname -r`/modules.dep ]; then
         depmod -Ae
 fi
 
+loaded_modules=" "
+
+process_file() {
+        file=$1
+
+        (cat $file; echo; ) |
+        while read module args
+        do
+                case "$module" in
+                        \#*|"") continue ;;
+                esac
+                [ -n "$(echo $loaded_modules | grep " $module ")" ] && continue
+                [ "$VERBOSE" != no ] && echo -n "$module "
+                eval "$LOAD_MODULE $module $args >/dev/null 2>&1"
+                loaded_modules="${loaded_modules}${module} "
+        done
+}
+
 [ "$VERBOSE" != no ] && echo -n "Loading modules: "
-(cat /etc/modules; echo; ) |
-while read module args
-do
-        case "$module" in
-                \#*|"") continue ;;
-        esac
-        [ "$VERBOSE" != no ] && echo -n "$module "
-        eval "$LOAD_MODULE $module $args >/dev/null 2>&1"
+[ -f /etc/modules ] && process_file /etc/modules
+
+[ -d /etc/modules-load.d ] || exit 0
+
+for f in /etc/modules-load.d/*.conf; do
+        process_file $f
 done
 [ "$VERBOSE" != no ] && echo