soc: qcom: spm: add SCM probe dependency

Check for SCM availability before attempting to use SPM. SPM probe will
fail otherwise.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/soc/qcom/spm.c b/drivers/soc/qcom/spm.c
index f9d7a85b2822..53807e839664 100644
--- a/drivers/soc/qcom/spm.c
+++ b/drivers/soc/qcom/spm.c
@@ -219,6 +219,9 @@ static int __init qcom_cpuidle_init(struct device_node *cpu_node, int cpu)
         cpumask_t mask;
         bool use_scm_power_down = false;
 
+        if (!qcom_scm_is_available())
+                return -EPROBE_DEFER;
+
         for (i = 0; ; i++) {
                 state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
                 if (!state_node)