target/linux/ipq40xx/patches-4.19/070-v4.20-soc-qcom-spm-add-SCM-probe-dependency.patch

   1 From 61a3bd10082b0e861b4e1bc451a92e20181a52f5 Mon Sep 17 00:00:00 2001
   2 From: Felix Fietkau <nbd@nbd.name>
   3 Date: Mon, 23 Jul 2018 16:17:35 +0200
   4 Subject: [PATCH] soc: qcom: spm: add SCM probe dependency
   5
   6 Check for SCM availability before attempting to use SPM. SPM probe will
   7 fail otherwise.
   8
   9 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  10 Signed-off-by: John Crispin <john@phrozen.org>
  11 Signed-off-by: Andy Gross <andy.gross@linaro.org>
  12 ---
  13  drivers/soc/qcom/spm.c | 3 +++
  14  1 file changed, 3 insertions(+)
  15
  16 --- a/drivers/soc/qcom/spm.c
  17 +++ b/drivers/soc/qcom/spm.c
  18 @@ -219,6 +219,9 @@ static int __init qcom_cpuidle_init(stru
  19         cpumask_t mask;
  20         bool use_scm_power_down = false;
  21
  22 +       if (!qcom_scm_is_available())
  23 +               return -EPROBE_DEFER;
  24 +
  25         for (i = 0; ; i++) {
  26                 state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
  27                 if (!state_node)