msm: ipa: remove duplicated ready cb for rmnet_ctl

Duplicate code which is causing we call probe_cb twice to rmnet_ctl
module.
Remove the un-necessary return after pipe setup but rmnet_ctl not
registered yet.

Change-Id: I935ca6c09801ab2882a196d739f0de55a4ab3806

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

@@ -3053,7 +3053,6 @@ int ipa3_rmnet_ctl_xmit(struct sk_buff *skb);
 int ipa3_setup_apps_low_lat_prod_pipe(void);
 int ipa3_setup_apps_low_lat_cons_pipe(void);
 int ipa3_teardown_apps_low_lat_pipes(void);
-void ipa3_rmnet_ctl_ready_notifier(void);
 const char *ipa_hw_error_str(enum ipa3_hw_errors err_type);
 int ipa_gsi_ch20_wa(void);
 int ipa3_lan_rx_poll(u32 clnt_hdl, int weight);

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

@@ -267,11 +267,14 @@ int ipa3_setup_apps_low_lat_cons_pipe(void)
 	if (rmnet_ctl_ipa3_ctx->cb_info.ready_cb) {
 		(*(rmnet_ctl_ipa3_ctx->cb_info.ready_cb))
 			(rmnet_ctl_ipa3_ctx->cb_info.ready_cb_user_data);
-	} else {
-		IPAERR("invalid ready_cb\n");
-		return -EFAULT;
 	}
-
+	/*
+	 * if no ready_cb yet, which means rmnet_ctl not
+	 * register to IPA, we will move state to pipe
+	 * ready and will wait for register event
+	 * coming and move to start state.
+	 * The ready_cb will called from regsiter itself.
+	 */
 	mutex_lock(&rmnet_ctl_ipa3_ctx->lock);
 	if (rmnet_ctl_ipa3_ctx->state == IPA_RMNET_CTL_NOT_REG)
 		rmnet_ctl_ipa3_ctx->state = IPA_RMNET_CTL_PIPE_READY;
@@ -369,17 +372,6 @@ int ipa3_teardown_apps_low_lat_pipes(void)
 	return ret;
 }
 
-void ipa3_rmnet_ctl_ready_notifier(void)
-{
-	if (rmnet_ctl_ipa3_ctx->cb_info.ready_cb) {
-		(*(rmnet_ctl_ipa3_ctx->cb_info.ready_cb))
-		(rmnet_ctl_ipa3_ctx->cb_info.ready_cb_user_data);
-	} else
-		IPAERR("invalid ready_cb\n");
-
-	IPADBG("low lat pipes are ready\n");
-}
-
 int ipa3_rmnet_ctl_xmit(struct sk_buff *skb)
 {
 	int ret;

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

@@ -1585,9 +1585,6 @@ low_lat_fail:
 	if (ret)
 		ipa3_del_a7_qmap_hdr();
 
-	/* notify rmnet_ctl pipes are ready to ues */
-	ipa3_rmnet_ctl_ready_notifier();
-
 	/* Sending QMI indication message share RSC/QMAP pipe details*/
 	ipa_send_wan_pipe_ind_to_modem(ingress_eps_mask);
 end: