wifi: ath12k: no need to handle pktlog during suspend/resume

Currently pktlog is stopped in suspend callback and started in
resume callback, and in either scenarios it's basically to
delete/modify ab->mon_reap_timer and to purge related rings.
For WCN7850 it's pointless because pktlog is not enabled: both
ab->mon_reap_timer and those rings are not initialized.

So remove pktlog handling in suspend/resume callbacks. And
further, remove these two functions and related callee because
no one is calling them.

Other chips are not affected because now only WCN7850 supports
suspend/resume.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240412060620.27519-8-quic_bqiang@quicinc.com

drivers/net/wireless/ath/ath12k/core.c

@@ -64,20 +64,6 @@ int ath12k_core_suspend(struct ath12k_base *ab)
 	}
 	rcu_read_unlock();
 
-	ret = ath12k_dp_rx_pktlog_stop(ab, true);
-	if (ret) {
-		ath12k_warn(ab, "failed to stop dp rx (and timer) pktlog during suspend: %d\n",
-			    ret);
-		return ret;
-	}
-
-	ret = ath12k_dp_rx_pktlog_stop(ab, false);
-	if (ret) {
-		ath12k_warn(ab, "failed to stop dp rx pktlog during suspend: %d\n",
-			    ret);
-		return ret;
-	}
-
 	ath12k_hif_irq_disable(ab);
 	ath12k_hif_ce_irq_disable(ab);
 
@@ -106,13 +92,6 @@ int ath12k_core_resume(struct ath12k_base *ab)
 	ath12k_hif_ce_irq_enable(ab);
 	ath12k_hif_irq_enable(ab);
 
-	ret = ath12k_dp_rx_pktlog_start(ab);
-	if (ret) {
-		ath12k_warn(ab, "failed to start rx pktlog during resume: %d\n",
-			    ret);
-		return ret;
-	}
-
 	return 0;
 }
 

drivers/net/wireless/ath/ath12k/dp_rx.c

@@ -247,28 +247,6 @@ static void ath12k_dp_clean_up_skb_list(struct sk_buff_head *skb_list)
 		dev_kfree_skb_any(skb);
 }
 
-static int ath12k_dp_purge_mon_ring(struct ath12k_base *ab)
-{
-	int i, reaped = 0;
-	unsigned long timeout = jiffies + msecs_to_jiffies(DP_MON_PURGE_TIMEOUT_MS);
-
-	do {
-		for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++)
-			reaped += ath12k_dp_mon_process_ring(ab, i, NULL,
-							     DP_MON_SERVICE_BUDGET,
-							     ATH12K_DP_RX_MONITOR_MODE);
-
-		/* nothing more to reap */
-		if (reaped < DP_MON_SERVICE_BUDGET)
-			return 0;
-
-	} while (time_before(jiffies, timeout));
-
-	ath12k_warn(ab, "dp mon ring purge timeout");
-
-	return -ETIMEDOUT;
-}
-
 static size_t ath12k_dp_list_cut_nodes(struct list_head *list,
 				       struct list_head *head,
 				       size_t count)
@@ -4310,29 +4288,3 @@ int ath12k_dp_rx_pdev_mon_attach(struct ath12k *ar)
 
 	return 0;
 }
-
-int ath12k_dp_rx_pktlog_start(struct ath12k_base *ab)
-{
-	/* start reap timer */
-	mod_timer(&ab->mon_reap_timer,
-		  jiffies + msecs_to_jiffies(ATH12K_MON_TIMER_INTERVAL));
-
-	return 0;
-}
-
-int ath12k_dp_rx_pktlog_stop(struct ath12k_base *ab, bool stop_timer)
-{
-	int ret;
-
-	if (stop_timer)
-		del_timer_sync(&ab->mon_reap_timer);
-
-	/* reap all the monitor related rings */
-	ret = ath12k_dp_purge_mon_ring(ab);
-	if (ret) {
-		ath12k_warn(ab, "failed to purge dp mon ring: %d\n", ret);
-		return ret;
-	}
-
-	return 0;
-}

drivers/net/wireless/ath/ath12k/dp_rx.h

 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 #ifndef ATH12K_DP_RX_H
 #define ATH12K_DP_RX_H
@@ -123,8 +123,6 @@ int ath12k_dp_rx_bufs_replenish(struct ath12k_base *ab,
 int ath12k_dp_rx_pdev_mon_attach(struct ath12k *ar);
 int ath12k_dp_rx_peer_frag_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_id);
 
-int ath12k_dp_rx_pktlog_start(struct ath12k_base *ab);
-int ath12k_dp_rx_pktlog_stop(struct ath12k_base *ab, bool stop_timer);
 u8 ath12k_dp_rx_h_l3pad(struct ath12k_base *ab,
 			struct hal_rx_desc *desc);
 struct ath12k_peer *