drivers: psci: Allow PSCI node to be disabled

Allow disabling PSCI support (mostly for testing purposes) by setting
the status property to "disabled". This makes the node behave in much
the same way as proper device nodes.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
index 8263429e21b8dd5b6801a4c2758e5a054568e4c7..6c60a5087cafb885ea7c79fb6e60b6dd026639e4 100644 (file)
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -630,7 +630,7 @@ int __init psci_dt_init(void)
 
        np = of_find_matching_node_and_match(NULL, psci_of_match, &matched_np);
 
-       if (!np)
+       if (!np || !of_device_is_available(np))
                return -ENODEV;
 
        init_fn = (psci_initcall_t)matched_np->data;