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ipq806x: fix crash on 4.9 if the rpm clock probe happens before cpuidle init

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2017-03-13 13:25:00 +01:00
parent 2a4baf3e79
commit 2029167b56
1 changed files with 16 additions and 0 deletions
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16
target/linux/ipq806x/patches-4.9/0070-qcom-spm-fix-probe-order.patch Normal file
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@ -0,0 +1,16 @@
Check for SCM availability before attempting to use SPM
Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/soc/qcom/spm.c
+++ b/drivers/soc/qcom/spm.c
@@ -219,6 +219,9 @@ static int __init qcom_cpuidle_init(stru
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)