wifi: ath12k: fix documentation on firmware stats

JIRA: https://issues.redhat.com/browse/RHEL-122256

commit a48a931
Author: Baochen Qiang <quic_bqiang@quicinc.com>
Date:   Thu Jun 12 09:31:49 2025 +0800

    wifi: ath12k: fix documentation on firmware stats
    
    Regarding the firmware stats events handling, the comment in
    ath12k_mac_get_fw_stats() says host determines whether all events have been
    received based on 'end' tag in TLV. This is wrong as there is no such tag
    at all, actually host makes the decision totally by itself based on the
    stats type and active pdev/vdev counts etc.
    
    Fix it to correctly reflect the logic.
    
    Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
    Tested-on: QCN9274 hw2.0 WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1
    
    Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
    Link: https://patch.msgid.link/20250612-ath12k-fw-fixes-v1-1-12f594f3b857@quicinc.com
    Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>

Author: jtornosm

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

@@ -4400,9 +4400,8 @@ int ath12k_mac_get_fw_stats(struct ath12k *ar,
 	/* Firmware sends WMI_UPDATE_STATS_EVENTID back-to-back
 	 * when stats data buffer limit is reached. fw_stats_complete
 	 * is completed once host receives first event from firmware, but
-	 * still end might not be marked in the TLV.
-	 * Below loop is to confirm that firmware completed sending all the event
-	 * and fw_stats_done is marked true when end is marked in the TLV.
+	 * still there could be more events following. Below loop is to wait
+	 * until firmware completes sending all the events.
 	 */
 	for (;;) {
 		if (time_after(jiffies, timeout))