msm: ipa3: Fix to flush to workqueue during teardown pipe

Workqueue was getting scheduled after teardwon the pipe.
Adding changes to flush to workqueue during teardown pipe.

Change-Id: I5a6b3464d76a9835bfbf7668e8dbb1cdf00c73fe
Signed-off-by: Ashok Vuyyuru <[email protected]>

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

@@ -1866,6 +1866,12 @@ int ipa3_teardown_sys_pipe(u32 clnt_hdl)
 	}
 	if (ep->sys->repl_wq)
 		flush_workqueue(ep->sys->repl_wq);
+
+	if(ep->sys->common_sys) {
+		cancel_delayed_work_sync(&ep->sys->common_sys->freepage_work);
+		tasklet_kill(&ep->sys->common_sys->tasklet_find_freepage);
+	}
+
 	if (IPA_CLIENT_IS_CONS(ep->client) && !ep->sys->common_buff_pool)
 		ipa3_cleanup_rx(ep->sys);
 

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

@@ -1210,7 +1210,6 @@ struct ipa3_sys_context {
 	struct ipa3_sys_context *common_sys;
 	struct tasklet_struct tasklet_find_freepage;
 	atomic_t page_avilable;
-	struct delayed_work freepage_work;
 	u32 napi_sort_page_thrshld_cnt;
 
 	/* ordering is important - mutable fields go above */
@@ -1226,6 +1225,7 @@ struct ipa3_sys_context {
 	struct ipa3_status_stats *status_stat;
 	u32 pm_hdl;
 	struct workqueue_struct *freepage_wq;
+	struct delayed_work freepage_work;
 	/* ordering is important - other immutable fields go below */
 };