char device driver + script

HI all,

When i run the below script, it is creating one entry in /proc/
devices. by name chrdev.
then mknod /dev/$device c $major 0 will be successful. 253

But when i do rmmod, entry from /proc/devices still be there. so when
i again run below script,

mknod /dev/$device c $major 0 will fail giving to many parameters.

254 253

I am not getting where i went wrong.

module="chrdev"

device="chrdev"

mode="664"

# invoke insmod with all arguments we got

# and use a pathname, as newer modutils don't look in . by default

/sbin/insmod ./$module.ko

# remove stale nodes

rm -f /dev/${device}

major=`awk "\\$2==\"$module\" {print \\$1}" /proc/devices`

echo $major

mknod /dev/$device c $major 0

-Regards
Gururaja
.

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