[PATCH v7 3/8] ath10k: save firmware debug log messages

[Kalle Valo]

From: Ben Greear <greearb at candelatech.com>

They may be dumped through the firmware dump debugfs
file.

Signed-off-by: Ben Greear <greearb at candelatech.com>
Signed-off-by: Kalle Valo <kvalo at qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/wmi.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 23acbadeb8fa..eafc565240f1 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -1290,6 +1290,16 @@ static int ath10k_wmi_event_debug_mesg(struct ath10k *ar, struct sk_buff *skb)
 
 	trace_ath10k_wmi_dbglog(skb->data, skb->len);
 
+	spin_lock_bh(&ar->data_lock);
+
+	/* First 4 bytes are a messages-dropped-due-to-overflow counter,
+	 * and should not be recorded in the dbglog buffer, so we skip
+	 * them.
+	 */
+	ath10k_debug_dbglog_add(ar, skb->data + 4, skb->len - 4);
+
+	spin_unlock_bh(&ar->data_lock);
+
 	return 0;
 }