[ath-next] wifi: ath10k: trigger hardware recovery upon rx failures

[Manikanta Pubbisetty]

When an error occurs during RX packet processing (e.g., MSDU done
failure), the driver sets rx_confused and drops all subsequent RX
packets until a Wi-Fi ON/OFF cycle clears the flag. This can leave
the device in a bad state where it cannot process RX data traffic.

Instead of leaving the device in such a state, trigger hardware
recovery so that such an error state can be reset and the device
can function again normally.

Tested-on: WCN3990 hw1.0 WLAN.HL.3.2.2.c10-00754-QCAHLSWMTPL-1
Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00288-QCARMSWPZ-1
Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00189

Signed-off-by: Manikanta Pubbisetty <manikanta.pubbisetty at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/htt_rx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index faac359aa9ac..1005daaaf158 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -2343,10 +2343,8 @@ static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
 	if (ret < 0) {
 		ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
 		__skb_queue_purge(&amsdu);
-		/* FIXME: It's probably a good idea to reboot the
-		 * device instead of leaving it inoperable.
-		 */
 		htt->rx_confused = true;
+		ath10k_core_start_recovery(ar);
 		return ret;
 	}
 
@@ -3311,6 +3309,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
 	if (ret < 0) {
 		ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
 		htt->rx_confused = true;
+		ath10k_core_start_recovery(ar);
 		return -EIO;
 	}
 
@@ -3344,6 +3343,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
 			ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
 			htt->rx_confused = true;
 			__skb_queue_purge(&list);
+			ath10k_core_start_recovery(ar);
 			return -EIO;
 		}
 	}

base-commit: 913998f903fb1432c0046c33003db38a9e8bedb1
-- 
2.34.1