Remove unnecessary complexity in supporting initialization of SPM driver
after cpuidle driver. The current kernel initializes SPM driver before
cpuidle driver.
Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx>
---
drivers/soc/qcom/spm.c | 28 ++++------------------------
1 file changed, 4 insertions(+), 24 deletions(-)
diff --git a/drivers/soc/qcom/spm.c b/drivers/soc/qcom/spm.c
index cda321c..84344e7 100644
--- a/drivers/soc/qcom/spm.c
+++ b/drivers/soc/qcom/spm.c
@@ -266,13 +266,9 @@ static int __init qcom_cpuidle_init(struct device_node *cpu_node, int cpu)
per_cpu(qcom_idle_ops, cpu) = fns;
/*
- * Condition: cpuidle_driver_register() needs to happen before
- * cpuidle_register_device().
- * Check if the SPM probe has happened -
- * - If SPM probed successfully before arm_idle_init(), then defer
- * the registration of cpuidle_device back to arm_idle_init()
- * - If the SPM probe happens in the future, then let the SPM probe
- * register the cpuidle device, return -ENXIO.
+ * SPM probe for the cpu should have happened by now, if the
+ * SPM device does not exist, return -ENXIO to indicate that the
+ * cpu does not support idle states.
*/
check_spm:
return per_cpu(cpu_spm_drv, cpu) ? 0 : -ENXIO;
@@ -332,7 +328,6 @@ static int spm_dev_probe(struct platform_device *pdev)
const struct of_device_id *match_id;
void __iomem *addr;
int cpu;
- int ret = 0;
drv = spm_get_drv(pdev, &cpu);
if (!drv)
@@ -373,22 +368,7 @@ static int spm_dev_probe(struct platform_device *pdev)
per_cpu(cpu_spm_drv, cpu) = drv;
- /*
- * If the cpuidle ops have already been registered with cpuidle,
- * then we have been waiting on this SPM probe to register the
- * cpuidle device.
- */
- if (per_cpu(qcom_idle_ops, cpu)) {
- struct cpuidle_device *dev;
-
- dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return -ENOMEM;
- dev->cpu = cpu;
- ret = cpuidle_register_device(dev);
- }
-
- return ret;
+ return 0;
}
static struct platform_driver spm_driver = {
--
2.1.0
--
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