qcacmn: Avoid invalid access to umac register when runtime suspend

When txrx_stats 28 is issued we post messages to reo command ring
to receive reo queue stats on the reo status ring.
This leads to acces accessing reo_cmd_ring head pointer shadow
register when runtime pm is suspended. Perform
a hif_pm_runtime_get to resume the apps before accessing
the shadow register.

Change-Id: Ie6df817fc114bd4c8ba7783df1fe3bd770deec40
CRs-Fixed: 2544174

hal/wifi3.0/hal_reo.c

@@ -436,7 +436,14 @@ inline int hal_reo_cmd_queue_stats(hal_ring_handle_t  hal_ring_hdl,
 	HAL_DESC_SET_FIELD(reo_desc, REO_GET_QUEUE_STATS_2, CLEAR_STATS,
 			      cmd->u.stats_params.clear);
 
-	hal_srng_access_end(hal_soc, hal_ring_hdl);
+	if (hif_pm_runtime_get(hal_soc->hif_handle) == 0) {
+		hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
+		hif_pm_runtime_put(hal_soc->hif_handle);
+	} else {
+		hal_srng_access_end_reap(hal_soc_hdl, hal_ring_hdl);
+		hal_srng_set_event(hal_ring_hdl, HAL_SRNG_FLUSH_EVENT);
+		hal_srng_inc_flush_cnt(hal_ring_hdl);
+	}
 
 	val = reo_desc[CMD_HEADER_DW_OFFSET];
 	return HAL_GET_FIELD(UNIFORM_REO_CMD_HEADER_0, REO_CMD_NUMBER,
@@ -567,7 +574,15 @@ inline int hal_reo_cmd_flush_cache(hal_ring_handle_t hal_ring_hdl,
 	HAL_DESC_SET_FIELD(reo_desc, REO_FLUSH_CACHE_2, FLUSH_ENTIRE_CACHE,
 		cp->flush_all);
 
-	hal_srng_access_end(hal_soc, hal_ring_hdl);
+	if (hif_pm_runtime_get(hal_soc->hif_handle) == 0) {
+		hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
+		hif_pm_runtime_put(hal_soc->hif_handle);
+	} else {
+		hal_srng_access_end_reap(hal_soc_hdl, hal_ring_hdl);
+		hal_srng_set_event(hal_ring_hdl, HAL_SRNG_FLUSH_EVENT);
+		hal_srng_inc_flush_cnt(hal_ring_hdl);
+	}
+
 	val = reo_desc[CMD_HEADER_DW_OFFSET];
 	return HAL_GET_FIELD(UNIFORM_REO_CMD_HEADER_0, REO_CMD_NUMBER,
 				     val);