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Subject[PATCH AUTOSEL 5.15 24/50] USB: sl811: fix memory leak with using debugfs_lookup()
Date
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

[ Upstream commit e1523c4dbc54e164638ff8729d511cf91e27be04 ]

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20230202153235.2412790-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/host/sl811-hcd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a5162..825ff67273102 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1501,7 +1501,7 @@ static void create_debug_file(struct sl811 *sl811)

static void remove_debug_file(struct sl811 *sl811)
{
- debugfs_remove(debugfs_lookup("sl811h", usb_debug_root));
+ debugfs_lookup_and_remove("sl811h", usb_debug_root);
}

/*-------------------------------------------------------------------------*/
--
2.39.2
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