udev-extraconf: Unmount SD card after ejection

Adds udev rule to unmount SD card partitions in case of improper
ejection from card reader.

When SD card is ejected from card reader without being unmounted
first, kernel does not generate a REMOVE event, instead it
generates a CHANGE event(only if polling is enabled
/sys/module/block/parameters/events_dfl_poll_msecs) and we don't
have any udev rule in automount.rules to handle this event,so
partitions never get unmounted. Unmounting of partitions can be
done if udev rules handle this CHANGE event.

(From OE-Core rev: 140d188b3665f914396834168feeff6ffcb64d76)

Signed-off-by: Abbas Raza <Abbas_Raza@mentor.com>
Signed-off-by: Yasir-Khan <yasir_khan@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 2 insertions, 3 deletions

diff --git a/meta/recipes-core/udev/udev-extraconf/automount.rules b/meta/recipes-core/udev/udev-extraconf/automount.rules
index 7e844c31bd..62578ea631 100644
--- a/meta/recipes-core/udev/udev-extraconf/automount.rules
+++ b/meta/recipes-core/udev/udev-extraconf/automount.rules
@@ -16,4 +16,4 @@
 # Media automounting
 SUBSYSTEM=="block", ACTION=="add"    RUN+="/etc/udev/scripts/mount.sh"
 SUBSYSTEM=="block", ACTION=="remove" RUN+="/etc/udev/scripts/mount.sh"
-
+SUBSYSTEM=="block", ACTION=="change", ENV{DISK_MEDIA_CHANGE}=="1" RUN+="/etc/udev/scripts/mount.sh"
diff --git a/meta/recipes-core/udev/udev-extraconf/mount.sh b/meta/recipes-core/udev/udev-extraconf/mount.sh
index 7df1b6e3e7..3eea910854 100644
--- a/meta/recipes-core/udev/udev-extraconf/mount.sh
+++ b/meta/recipes-core/udev/udev-extraconf/mount.sh
@@ -78,8 +78,7 @@ if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ] && [ -n "$ID_FS_TYPE" -o "$media_t
 fi
 
 
-
-if [ "$ACTION" = "remove" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
+if [ "$ACTION" = "remove" ] || [ "$ACTION" = "change" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
         for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d " " `
         do
                 $UMOUNT $mnt