Segmentation Fault When Registering GPIO Interrupt Handler

Description

In the Linux implementation included with the Golden System Reference Design, if you attempt to register an interrupt handler for a nonexistent GPIO device, you will see error messages similar to the following:

Unable to handle kernel NULL pointer dereference at virtual address 00000028 ... Segmentation fault

These errors indicate a kernel segmentation fault.

Resolution

With the Golden System Reference Design, ensure that you attempt to register interrupts only for existing GPIO devices.

Alternatively, upgrade to v13.1 or later.