This is a note to let you know that I've just added the patch titled
wifi: mwifiex: debugfs: Drop unnecessary error check for debugfs_create_dir()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mwifiex-debugfs-drop-unnecessary-error-check-fo.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit afc22d45d63c4f6b70aca6500c345f57d441054f
Author: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Date: Sun Sep 3 11:02:15 2023 +0800
wifi: mwifiex: debugfs: Drop unnecessary error check for debugfs_create_dir()
[ Upstream commit 50180c7f8e3de7c2d87f619131776598fcb1478d ]
debugfs_create_dir() returns ERR_PTR and never return NULL.
As Russell suggested, this patch removes the error checking for
debugfs_create_dir(). This is because the DebugFS kernel API is developed
in a way that the caller can safely ignore the errors that occur during
the creation of DebugFS nodes. The debugfs APIs have a IS_ERR() judge in
start_creating() which can handle it gracefully. So these checks are
unnecessary.
Fixes: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Suggested-by: Russell King (Oracle) <linux@xxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://msgid.link/20230903030216.1509013-3-ruanjinjie@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/marvell/mwifiex/debugfs.c b/drivers/net/wireless/marvell/mwifiex/debugfs.c
index 0f62da50e11a2..63af04202d75f 100644
--- a/drivers/net/wireless/marvell/mwifiex/debugfs.c
+++ b/drivers/net/wireless/marvell/mwifiex/debugfs.c
@@ -977,9 +977,6 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
mwifiex_dfs_dir);
- if (!priv->dfs_dev_dir)
- return;
-
MWIFIEX_DFS_ADD_FILE(info);
MWIFIEX_DFS_ADD_FILE(debug);
MWIFIEX_DFS_ADD_FILE(getlog);
