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qcacld-3.0: add sync between suspend and wow resume in runtime pm

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In moselle, once wow enabled there is a possibility that wow wake
interrupt can be fired from FW during runtime suspend in progress
in host, this will introduce a race between runtime suspend and
resume, so adding a synchronization between runtime suspend and
wow triggered runtime resume.

Change-Id: I19a4d70f47d5c202d0ba291c3edc8a260690f434
CRs-Fixed: 2845670
This commit is contained in:
Vevek Venkatesan 2020-12-28 02:16:12 +05:30 • committed by snandini
commit 4a40f3bd18
1 changed files with 10 additions and 0 deletions
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10
components/pmo/core/src/wlan_pmo_suspend_resume.c
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@ -970,6 +970,7 @@ QDF_STATUS pmo_core_psoc_bus_runtime_suspend(struct wlan_objmgr_psoc *psoc,
QDF_STATUS status;
int ret;
struct pmo_wow_enable_params wow_params = {0};
struct pmo_psoc_priv_obj *psoc_ctx;
qdf_time_t begin, end;
int pending;
@ -1057,7 +1058,16 @@ QDF_STATUS pmo_core_psoc_bus_runtime_suspend(struct wlan_objmgr_psoc *psoc,
}
}
hif_pm_runtime_suspend_lock(hif_ctx);
psoc_ctx = pmo_psoc_get_priv(psoc);
if (pmo_core_get_wow_initial_wake_up(psoc_ctx)) {
hif_pm_runtime_suspend_unlock(hif_ctx);
pmo_err("Target wake up received before suspend completion");
status = QDF_STATUS_E_BUSY;
goto resume_hif;
}
hif_process_runtime_suspend_success(hif_ctx);
hif_pm_runtime_suspend_unlock(hif_ctx);
goto dec_psoc_ref;