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kernel/power/energy_model.c: fix memory leak with using debugfs_lookup()

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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: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Link: https://lore.kernel.org/r/20230202151515.2309543-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman
2023-02-02 16:15:15 +01:00
parent 5f5139974c
commit a0bc3f78d0
1 changed files with 1 additions and 4 deletions
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5
kernel/power/energy_model.c
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@@ -87,10 +87,7 @@ static void em_debug_create_pd(struct device *dev)
static void em_debug_remove_pd(struct device *dev) static void em_debug_remove_pd(struct device *dev)
{ {
struct dentry *debug_dir; debugfs_lookup_and_remove(dev_name(dev), rootdir);
debug_dir = debugfs_lookup(dev_name(dev), rootdir);
debugfs_remove_recursive(debug_dir);
} }
static int __init em_debug_init(void) static int __init em_debug_init(void)