Perform these tasks if GenWQE does not work as
expected.
Procedure
-
Confirm that the device driver is loaded.
# lsmod | grep genwqe
genwqe_card 88997 0
crc_itu_t 1910 1 genwqe_card
If the
genwqe_card module is not listed in the command output, load it with
modprobe.
# modprobe genwqe_card
The
genwqe_card
module does not have module parameters.
-
Confirm that GenWQE device nodes exist and that the
nodes have the required permissions.
The nodes must grant read and write permissions to all users, for
example:
# ls -l /dev/genwqe*
crwrwrw 1 root root 249, 0 Jun 30 10:01 /dev/genwqe0_card
crwrwrw 1 root root 248, 0 Jun 30 10:01 /dev/genwqe1_card
If the permissions are not
crwrwrw, create a file
/etc/udev/rules.d/52-genwqedevices.rules with this rule as its
content:
KERNEL=="genwqe*", MODE="0666"
The new rule takes effect next time the
GenWQE device driver is loaded.
Tip: Use the chmod command to temporarily set the permissions.
What to do next
You can find debug information in the Linux® source
tree at /sys/kernel/debug/genwqe and at
/sys/class/genwqe.