eudev: Remove udev-cache

As eudev requires devtmpfs it is not necessary to keep a cache anymore
as the kernel handles entries in /dev itself.

(From OE-Core rev: 048f4149b8438c521e8b65a3c96d850a9b4a3e5b)

Signed-off-by: Oliver Stäbler <oliver.staebler@bytesatwork.ch>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 49 deletions

diff --git a/meta/recipes-core/udev/eudev/init b/meta/recipes-core/udev/eudev/init
index 0ab028b391..0455ade258 100644
--- a/meta/recipes-core/udev/eudev/init
+++ b/meta/recipes-core/udev/eudev/init
@@ -14,25 +14,7 @@ export TZ=/etc/localtime
 [ -d /sys/class ] || exit 1
 [ -r /proc/mounts ] || exit 1
 [ -x @UDEVD@ ] || exit 1
-SYSCONF_CACHED="/etc/udev/cache.data"
-SYSCONF_TMP="/dev/shm/udev.cache"
-DEVCACHE_REGEN="/dev/shm/udev-regen" # create to request cache regen
 
-# A list of files which are used as a criteria to judge whether the udev cache could be reused.
-CMP_FILE_LIST="/proc/version /proc/cmdline /proc/devices"
-[ -f /proc/atags ] && CMP_FILE_LIST="$CMP_FILE_LIST /proc/atags"
-
-# List of files whose metadata (size/mtime/name) will be included in cached
-# system state.
-META_FILE_LIST="lib/udev/rules.d/* etc/udev/rules.d/*"
-
-# Command to compute system configuration.
-sysconf_cmd () {
-        cat -- $CMP_FILE_LIST
-        stat -c '%s %Y %n' -- $META_FILE_LIST | awk -F/ '{print $1 " " $NF;}'
-}
-
-[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
 [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
 [ -f /etc/default/rcS ] && . /etc/default/rcS
 
@@ -66,37 +48,6 @@ case "$1" in
     # /var/volatile/tmp directory to be available.
     mkdir -m 1777 -p /var/volatile/tmp
 
-    # Cache handling.
-    if [ "$DEVCACHE" != "" ]; then
-            if [ -e $DEVCACHE ]; then
-                    sysconf_cmd > "$SYSCONF_TMP"
-                    if cmp $SYSCONF_CACHED $SYSCONF_TMP >/dev/null; then
-                            tar xmf $DEVCACHE -C / -m
-                            not_first_boot=1
-                            [ "$VERBOSE" != "no" ] && echo "udev: using cache file $DEVCACHE"
-                            [ -e $SYSCONF_TMP ] && rm -f "$SYSCONF_TMP"
-                            [ -e "$DEVCACHE_REGEN" ] && rm -f "$DEVCACHE_REGEN"
-                    else
-                            # Output detailed reason why the cached /dev is not used
-                            cat <<EOF
-udev: Not using udev cache because of changes detected in the following files:
-udev:     $CMP_FILE_LIST
-udev:     $META_FILE_LIST
-udev: The udev cache will be regenerated. To identify the detected changes,
-udev: compare the cached sysconf at   $SYSCONF_CACHED
-udev: against the current sysconf at  $SYSCONF_TMP
-EOF
-                            touch "$DEVCACHE_REGEN"
-                    fi
-            else
-                    if [ "$ROOTFS_READ_ONLY" != "yes" ]; then
-                            # If rootfs is not read-only, it's possible that a new udev cache would be generated;
-                            # otherwise, we do not bother to read files.
-                            touch "$DEVCACHE_REGEN"
-                    fi
-            fi
-    fi
-
     # make_extra_nodes
     kill_udevd > "/dev/null" 2>&1