main/busybox-initscripts: try fix usb devices

ref #1481

1 files changed, 19 insertions, 56 deletions

diff --git a/main/busybox-initscripts/usbdev b/main/busybox-initscripts/usbdev
index ea5b915573..c811736dda 100644..100755
--- a/main/busybox-initscripts/usbdev
+++ b/main/busybox-initscripts/usbdev
@@ -1,62 +1,25 @@
 #!/bin/sh
 
-# script is buggy; until patched just do exit 0
-#exit 0
+# mdev -s will not set SUBSYSTEM or DEVNAME so we trigger a hotplug event
+if [ "$SUBSYSTEM" != "usb" ] || [ "$DEVTYPE" != "usb_device" ]; then
+	uev=/sys/bus/usb/devices/$MDEV/uevent
+	[ -e "$uev" ] && echo "add" > "$uev"
+	exit
+fi
 
-# add zeros to device or bus
-add_zeros () {
-	case "$(echo $1 | wc -L)" in
-		1)	echo "00$1" ;;
-		2)	echo "0$1" ;;
-		*)	echo "$1"
-	esac
-	exit 0
-}
+[ -n "$DEVNAME" ] || exit
 
-
-# bus and device dirs in /sys
-USB_PATH=$(echo $MDEV | sed -e 's/usbdev\([0-9]\).[0-9]/usb\1/')
-USB_PATH=$(find /sys/devices -type d -name "$USB_PATH")
-USB_DEV_DIR=$(echo $MDEV | sed -e 's/usbdev\([0-9]\).\([0-9]\)/\1-\2/')
-
-# dir names in /dev
-BUS=$(add_zeros $(echo $MDEV | sed -e 's/^usbdev\([0-9]\).[0-9]/\1/'))
-USB_DEV=$(add_zeros $(echo $MDEV | sed -e 's/^usbdev[0-9].\([0-9]\)/\1/'))
-
-
-# try to load the proper driver for usb devices
 case "$ACTION" in
-	add|"")
-		# load usb bus driver
-		for i in $USB_PATH/*/modalias ; do
-			modprobe `cat $i` 2>/dev/null
-		done
-		# load usb device driver if existent
-		if [ -d $USB_PATH/$USB_DEV_DIR ]; then
-			for i in $USB_PATH/$USB_DEV_DIR/*/modalias ; do
-				modprobe `cat $i` 2>/dev/null
-			done
-		fi
-		# move usb device file
-		mkdir -p bus/usb/$BUS
-		mv $MDEV bus/usb/$BUS/$USB_DEV
-		;;
-	remove)
-		# unload device driver, if device dir is existent
-		if [ -d $USB_PATH/$USB_DEV_DIR ]; then
-			for i in $USB_PATH/$USB_DEV_DIR/*/modalias ; do
-				modprobe -r `cat $i` 2>/dev/null
-		done
-		fi
-		# unload usb bus driver. Does this make sense?
-		# what happens, if two usb devices are plugged in
-		# and one is removed?
-		for i in $USB_PATH/*/modalias ; do
-			modprobe -r `cat $i` 2>/dev/null
-		done
-		# remove device file and possible empty dirs
-		rm -f bus/usb/$BUS/$USB_DEV
-		rmdir bus/usb/$BUS/ 2>/dev/null
-		rmdir bus/usb/ 2>/dev/null
-		rmdir bus/ 2>/dev/null
+add)
+	mkdir -p "${DEVNAME%/*}"
+	mv $MDEV $DEVNAME
+	# autoload driver
+	for i in /sys/$DEVPATH/*/modalias; do
+		[ -e "$i" ] && echo $i
+	done | xargs sort -u | xargs modprobe -a 2>/dev/null
+	;;
+remove)
+	rm $DEVNAME
+	;;
 esac
+