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GPIO interrupt causes kernel panic

scint
scint New Member Posts: 2 ✭
in UP Board Hardware Specification

Hi, I've found that I can't configure any of the GPIO pins to handle interrupt requests. The following is an example which fails when trying to set Linux GPIO 5 as an IRQ pin:

$ echo 5 > /sys/class/gpio/export
$ cat /sys/class/gpio/gpio5/value
1
$ cat /sys/class/gpio/gpio5/direction
in
$ echo rising > /sys/class/gpio/gpio5/edge
kernel panic

Specs:
Hardware: UP-CHT01
OS: Ubuntu 16.04.5 LTS
Kernel: 4.15.0-37-generic
BIOS: UPC1DM15

Thanks.

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