qcacmn: ADD API to sanatize during SSR shutdown

During SSR, HDD context prevails, no need to free the contexts.
Hence add an API to sanatize runtime pm list during SSR shutdown.

CRs-Fixed: 1082449
Change-Id: I189eca6fc31dfa2cdedade3d5308f01311d72c88

hif/src/pcie/if_pci.c

@@ -1227,8 +1227,21 @@ static void hif_pm_runtime_open(struct hif_pci_softc *sc)
  */
 static void hif_pm_runtime_sanitize_on_exit(struct hif_pci_softc *sc)
 {
+	unsigned long flags;
+	struct hif_pm_runtime_lock *ctx, *tmp;
+
 	if (atomic_read(&sc->dev->power.usage_count) != 1)
 		hif_pci_runtime_pm_warn(sc, "Driver UnLoaded");
+	else
+		return;
+
+	spin_lock_irqsave(&sc->runtime_lock, flags);
+	list_for_each_entry_safe(ctx, tmp, &sc->prevent_suspend_list, list) {
+		spin_unlock_irqrestore(&sc->runtime_lock, flags);
+		hif_runtime_lock_deinit(GET_HIF_OPAQUE_HDL(sc), ctx);
+		spin_lock_irqsave(&sc->runtime_lock, flags);
+	}
+	spin_unlock_irqrestore(&sc->runtime_lock, flags);
 
 	/* ensure 1 and only 1 usage count so that when the wlan
 	 * driver is re-insmodded runtime pm won't be
@@ -1241,6 +1254,29 @@ static void hif_pm_runtime_sanitize_on_exit(struct hif_pci_softc *sc)
 		hif_pm_runtime_put_auto(sc->dev);
 }
 
+static int __hif_pm_runtime_allow_suspend(struct hif_pci_softc *hif_sc,
+					  struct hif_pm_runtime_lock *lock);
+
+/**
+ * hif_pm_runtime_sanitize_on_ssr_exit() - Empty the suspend list on SSR
+ * @sc: PCIe Context
+ *
+ * API is used to empty the runtime pm prevent suspend list.
+ *
+ * Return: void
+ */
+static void hif_pm_runtime_sanitize_on_ssr_exit(struct hif_pci_softc *sc)
+{
+	unsigned long flags;
+	struct hif_pm_runtime_lock *ctx, *tmp;
+
+	spin_lock_irqsave(&sc->runtime_lock, flags);
+	list_for_each_entry_safe(ctx, tmp, &sc->prevent_suspend_list, list) {
+		 __hif_pm_runtime_allow_suspend(sc, ctx);
+	}
+	spin_unlock_irqrestore(&sc->runtime_lock, flags);
+}
+
 /**
  * hif_pm_runtime_close(): close runtime pm
  * @sc: pci bus handle
@@ -1249,17 +1285,18 @@ static void hif_pm_runtime_sanitize_on_exit(struct hif_pci_softc *sc)
  */
 static void hif_pm_runtime_close(struct hif_pci_softc *sc)
 {
+	struct hif_softc *scn = HIF_GET_SOFTC(sc);
+
 	if (qdf_atomic_read(&sc->pm_state) == HIF_PM_RUNTIME_STATE_NONE)
 		return;
 	else
 		hif_pm_runtime_stop(sc);
 
-	hif_pm_runtime_sanitize_on_exit(sc);
+	hif_is_recovery_in_progress(scn) ?
+		hif_pm_runtime_sanitize_on_ssr_exit(sc) :
+		hif_pm_runtime_sanitize_on_exit(sc);
 }
-
-
 #else
-
 static void hif_pm_runtime_close(struct hif_pci_softc *sc) {}
 static void hif_pm_runtime_open(struct hif_pci_softc *sc) {}
 static void hif_pm_runtime_start(struct hif_pci_softc *sc) {}
@@ -4133,5 +4170,4 @@ void hif_runtime_lock_deinit(struct hif_opaque_softc *hif_ctx,
 
 	qdf_mem_free(context);
 }
-
 #endif /* FEATURE_RUNTIME_PM */