netdev - [PATCH net-next 2/2] net: wwan: iosm: drop debugfs dev reference

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Date:   Mon, 14 Feb 2022 12:46:53 +0530
From:   M Chetan Kumar <m.chetan.kumar@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     kuba@...nel.org, davem@...emloft.net, johannes@...solutions.net,
        ryazanov.s.a@...il.com, loic.poulain@...aro.org,
        krishna.c.sudi@...el.com, m.chetan.kumar@...el.com,
        m.chetan.kumar@...ux.intel.com, linuxwwan@...el.com
Subject: [PATCH net-next 2/2] net: wwan: iosm: drop debugfs dev reference

Post debugfs use call wwan_put_debugfs_dir()to drop
debugfs dev reference.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@...ux.intel.com>
---
 drivers/net/wwan/iosm/iosm_ipc_debugfs.c | 5 +++--
 drivers/net/wwan/iosm/iosm_ipc_imem.h    | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wwan/iosm/iosm_ipc_debugfs.c b/drivers/net/wwan/iosm/iosm_ipc_debugfs.c
index f2f57751a7d2..e916139b8cd4 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_debugfs.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_debugfs.c
@@ -12,10 +12,10 @@
 
 void ipc_debugfs_init(struct iosm_imem *ipc_imem)
 {
-	struct dentry *debugfs_pdev = wwan_get_debugfs_dir(ipc_imem->dev);
+	ipc_imem->debugfs_wwan_dir = wwan_get_debugfs_dir(ipc_imem->dev);
 
 	ipc_imem->debugfs_dir = debugfs_create_dir(KBUILD_MODNAME,
-						   debugfs_pdev);
+						   ipc_imem->debugfs_wwan_dir);
 
 	ipc_imem->trace = ipc_trace_init(ipc_imem);
 	if (!ipc_imem->trace)
@@ -26,4 +26,5 @@ void ipc_debugfs_deinit(struct iosm_imem *ipc_imem)
 {
 	ipc_trace_deinit(ipc_imem->trace);
 	debugfs_remove_recursive(ipc_imem->debugfs_dir);
+	wwan_put_debugfs_dir(ipc_imem->debugfs_wwan_dir);
 }
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.h b/drivers/net/wwan/iosm/iosm_ipc_imem.h
index 5682e8d6be7b..e700dc8bfe0a 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h
@@ -341,6 +341,7 @@ enum ipc_phase {
  * @ev_mux_net_transmit_pending:0 means inform the IPC tasklet to pass
  * @reset_det_n:		Reset detect flag
  * @pcie_wake_n:		Pcie wake flag
+ * @debugfs_wwan_dir:		WWAN Debug FS directory entry
  * @debugfs_dir:		Debug FS directory for driver-specific entries
  */
 struct iosm_imem {
@@ -384,6 +385,7 @@ struct iosm_imem {
 	   reset_det_n:1,
 	   pcie_wake_n:1;
 #ifdef CONFIG_WWAN_DEBUGFS
+	struct dentry *debugfs_wwan_dir;
 	struct dentry *debugfs_dir;
 #endif
 };
-- 
2.25.1