anierin/msm-5.15
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power_state: bring the QMP channel check to early stage

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Bring the QMP channel availability check to early stage of
probe so that if channel not available we can return EPROBE_DEFER
early instead do register SSR notification and unregister if QMP
get_channel fails.

This patch also duplicates the subsystem name into the subsystem's
data structure instead assigning the name pointer.

Change-Id: I03a37e8c002b8357052542b8594d64b6fb280a03
Signed-off-by: Raghavendra Kakarla <quic_rkakarla@quicinc.com>
This commit is contained in:
Raghavendra Kakarla
2023-12-20 19:07:57 +05:30
parent e3a0e2f01a
commit 06763fa531
1 changed files with 7 additions and 9 deletions
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16
drivers/soc/qcom/power_state.c
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@@ -573,6 +573,12 @@ static int power_state_probe(struct platform_device *pdev)
if (!drv)
return -ENOMEM;
if (IS_ENABLED(CONFIG_NOTIFY_AOP)) {
drv->qmp = qmp_get(&pdev->dev);
if (IS_ERR(drv->qmp))
return -EPROBE_DEFER;
}
drv->ps_pm_nb.notifier_call = ps_pm_cb;
drv->ps_pm_nb.priority = PS_PM_NOTIFIER_PRIORITY;
ret = register_pm_notifier(&drv->ps_pm_nb);
@@ -601,7 +607,7 @@ static int power_state_probe(struct platform_device *pdev)
goto remove_ss;
}
ss_data->name = name;
ss_data->name = kstrdup_const(name, GFP_KERNEL);
ss_data->rproc_handle = rproc_handle;
ss_data->ps_ssr_nb.notifier_call = ps_ssr_cb;
@@ -627,14 +633,6 @@ static int power_state_probe(struct platform_device *pdev)
list_add_tail(&ss_data->list, &drv->sub_sys_list);
}
if (IS_ENABLED(CONFIG_NOTIFY_AOP)) {
drv->qmp = qmp_get(&pdev->dev);
if (IS_ERR(drv->qmp)) {
ret = PTR_ERR(drv->qmp);
goto remove_ss;
}
}
ret = power_state_dev_init(drv);
if (ret)
goto remove_ss;