initrdscripts: handle mmc device as installer medium

Platforms which have the capability of using the MMC as an
installer medium will present the same MMC device as an
installation candidate. This happens because the MMC
devices appear as mmcblk<X> and the current script strips
up the <X> which is needed to identify an MMC device
uniqely.
This patch now updates the way device identifier stripping
is done and handles the exclusion of installer device from
installation candidates more generically.

(From OE-Core rev: 80ec9f62791575de4948d7635dc6674abfac2193)

Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 16 insertions, 4 deletions

diff --git a/meta/recipes-core/initrdscripts/files/init-install.sh b/meta/recipes-core/initrdscripts/files/init-install.sh
index 7fccddea03..f9e9768e43 100644
--- a/meta/recipes-core/initrdscripts/files/init-install.sh
+++ b/meta/recipes-core/initrdscripts/files/init-install.sh
@@ -17,7 +17,14 @@ swap_ratio=5
 hdnamelist=""
 live_dev_name=`cat /proc/mounts | grep ${1%/} | awk '{print $1}'`
 live_dev_name=${live_dev_name#\/dev/}
-live_dev_name=${live_dev_name%%[0-9]*}
+# Only strip the digit identifier if the device is not an mmc
+case $live_dev_name in
+    mmcblk*)
+    ;;
+    *)
+        live_dev_name=${live_dev_name%%[0-9]*}
+    ;;
+esac
 
 echo "Searching for hard drives ..."
 
@@ -35,9 +42,14 @@ for device in `ls /sys/block/`; do
         *)
             # skip the device LiveOS is on
             # Add valid hard drive name to the list
-            if [ $device != $live_dev_name -a -e /dev/$device ]; then
-                hdnamelist="$hdnamelist $device"
-            fi
+            case $device in
+                $live_dev_name*)
+                # skip the device we are running from
+                ;;
+                *)
+                    hdnamelist="$hdnamelist $device"
+                ;;
+            esac
             ;;
     esac
 done