[PATCH 2/3] wifi: ath12k: unregister per pdev debugfs

[Aditya Kumar Singh]

During normal de-initialization path or if any error happens while
registering the hardware, there is no support to unregister the per pdev
debugfs. Add support for the same.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Aditya Kumar Singh <quic_adisi at quicinc.com>
---
 drivers/net/wireless/ath/ath12k/debugfs.c | 10 ++++++++++
 drivers/net/wireless/ath/ath12k/debugfs.h |  6 +++++-
 drivers/net/wireless/ath/ath12k/mac.c     |  7 ++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/debugfs.c b/drivers/net/wireless/ath/ath12k/debugfs.c
index 8d8ba951093b..3b464cd40da6 100644
--- a/drivers/net/wireless/ath/ath12k/debugfs.c
+++ b/drivers/net/wireless/ath/ath12k/debugfs.c
@@ -88,3 +88,13 @@ void ath12k_debugfs_register(struct ath12k *ar)
 				    &fops_simulate_radar);
 	}
 }
+
+void ath12k_debugfs_unregister(struct ath12k *ar)
+{
+	if (!ar->debug.debugfs_pdev)
+		return;
+
+	/* TODO: Remove symlink under ieee80211/phy* */
+	debugfs_remove_recursive(ar->debug.debugfs_pdev);
+	ar->debug.debugfs_pdev = NULL;
+}
diff --git a/drivers/net/wireless/ath/ath12k/debugfs.h b/drivers/net/wireless/ath/ath12k/debugfs.h
index a62f2a550b23..8d64ba03aa9a 100644
--- a/drivers/net/wireless/ath/ath12k/debugfs.h
+++ b/drivers/net/wireless/ath/ath12k/debugfs.h
@@ -11,7 +11,7 @@
 void ath12k_debugfs_soc_create(struct ath12k_base *ab);
 void ath12k_debugfs_soc_destroy(struct ath12k_base *ab);
 void ath12k_debugfs_register(struct ath12k *ar);
-
+void ath12k_debugfs_unregister(struct ath12k *ar);
 #else
 static inline void ath12k_debugfs_soc_create(struct ath12k_base *ab)
 {
@@ -25,6 +25,10 @@ static inline void ath12k_debugfs_register(struct ath12k *ar)
 {
 }
 
+static inline void ath12k_debugfs_unregister(struct ath12k *ar)
+{
+}
+
 #endif /* CONFIG_ATH12K_DEBUGFS */
 
 #endif /* _ATH12K_DEBUGFS_H_ */
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index beec42d4ec24..381fee8ca748 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -8836,8 +8836,10 @@ static void ath12k_mac_hw_unregister(struct ath12k_hw *ah)
 	struct ath12k *ar;
 	int i;
 
-	for_each_ar(ah, ar, i)
+	for_each_ar(ah, ar, i) {
 		cancel_work_sync(&ar->regd_update_work);
+		ath12k_debugfs_unregister(ar);
+	}
 
 	ieee80211_unregister_hw(hw);
 
@@ -9084,6 +9086,9 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	return 0;
 
 err_unregister_hw:
+	for_each_ar(ah, ar, i)
+		ath12k_debugfs_unregister(ar);
+
 	ieee80211_unregister_hw(hw);
 
 err_free_if_combs:
-- 
2.34.1