[PATCH 112/379][SRU][OEM-5.6] ath11k: remove stale monitor status descriptor

[You-Sheng Yang]

From: Miles Hu <milehu at codeaurora.org>

BugLink: https://bugs.launchpad.net/bugs/1879633

The driver is not handling monitor status descriptor whenever
the done bit of status descriptor is not set by hardware. This leave
a stale entry in monitor status ring and flooding warning message.
Fix that by removing the descriptor and move forward to next one
in monitor status ring.

Co-developed-by: Rajkumar Manoharan <rmanohar at codeaurora.org>
Signed-off-by: Rajkumar Manoharan <rmanohar at codeaurora.org>
Signed-off-by: Miles Hu <milehu at codeaurora.org>
Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
Link: https://lore.kernel.org/r/1588642063-6950-1-git-send-email-rmanohar@codeaurora.org
(cherry picked from commit 32a2be499c01ee523b28018d451b39ded4297b11)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 drivers/net/wireless/ath/ath11k/dp_rx.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index 85670608c3e2..a54610d75c40 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -2728,7 +2728,7 @@ static int ath11k_dp_rx_reap_mon_status_ring(struct ath11k_base *ab, int mac_id,
 				ath11k_warn(ab, "rx monitor status with invalid buf_id %d\n",
 					    buf_id);
 				spin_unlock_bh(&rx_ring->idr_lock);
-				continue;
+				goto move_next;
 			}
 
 			idr_remove(&rx_ring->bufs_idr, buf_id);
@@ -2747,13 +2747,16 @@ static int ath11k_dp_rx_reap_mon_status_ring(struct ath11k_base *ab, int mac_id,
 			tlv = (struct hal_tlv_hdr *)skb->data;
 			if (FIELD_GET(HAL_TLV_HDR_TAG, tlv->tl) !=
 					HAL_RX_STATUS_BUFFER_DONE) {
-				ath11k_hal_srng_src_get_next_entry(ab, srng);
-				continue;
+				ath11k_warn(ab, "mon status DONE not set %lx\n",
+					    FIELD_GET(HAL_TLV_HDR_TAG,
+						      tlv->tl));
+				dev_kfree_skb_any(skb);
+				goto move_next;
 			}
 
 			__skb_queue_tail(skb_list, skb);
 		}
-
+move_next:
 		skb = ath11k_dp_rx_alloc_mon_status_buf(ab, rx_ring,
 							&buf_id, GFP_ATOMIC);
 
-- 
2.29.2