tree 649c96fd42dd56416f1666587a802f69ce858980
parent 64cd0cc108d47b740803af90f60ba7ba8772b258
author Nikos Nikoleris <nikos.nikoleris@arm.com> 1685462942 +0100
committer Andrew Jones <andrew.jones@linux.dev> 1687956639 +0200

devicetree: Check that fdt is not NULL in dt_available()

Up until now, for platforms that support DT, kvm-unit-tests would
unconditionally use DT to configure the system and the code made the
assumption that the fdt will always be a valid pointer.

On Arm systems that support both ACPI and DT, kvm-unit-tests plans to
follow the same convension as the Linux kernel: attempt to configure the
system using the DT first, then fallback to ACPI.

As a result, the fdt pointer can be NULL. Check for that in dt_available().

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Andrew Jones <andrew.jones@linux.dev>
[ Alex E: Minor changes to the commit message ]
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>