From 57df60e1f981fa8c288a49012a4bbb02ae0ecdbc Mon Sep 17 00:00:00 2001 From: Yang Ruibin <11162571@vivo.com> Date: Wed, 21 Aug 2024 03:59:33 -0400 Subject: [PATCH] thermal/debugfs: Fix the NULL vs IS_ERR() confusion in debugfs_create_dir() The debugfs_create_dir() return value is never NULL, it is either a valid pointer or an error one. Use IS_ERR() to check it. Fixes: 7ef01f228c9f ("thermal/debugfs: Add thermal debugfs information for mitigation episodes") Fixes: 755113d76786 ("thermal/debugfs: Add thermal cooling device debugfs information") Signed-off-by: Yang Ruibin <11162571@vivo.com> Link: https://patch.msgid.link/20240821075934.12145-1-11162571@vivo.com [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki --- drivers/thermal/thermal_debugfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/thermal_debugfs.c b/drivers/thermal/thermal_debugfs.c index 7dd67bf48571..939d3e5f1817 100644 --- a/drivers/thermal/thermal_debugfs.c +++ b/drivers/thermal/thermal_debugfs.c @@ -178,11 +178,11 @@ struct thermal_debugfs { void thermal_debug_init(void) { d_root = debugfs_create_dir("thermal", NULL); - if (!d_root) + if (IS_ERR(d_root)) return; d_cdev = debugfs_create_dir("cooling_devices", d_root); - if (!d_cdev) + if (IS_ERR(d_cdev)) return; d_tz = debugfs_create_dir("thermal_zones", d_root); @@ -202,7 +202,7 @@ static struct thermal_debugfs *thermal_debugfs_add_id(struct dentry *d, int id) snprintf(ids, IDSLENGTH, "%d", id); thermal_dbg->d_top = debugfs_create_dir(ids, d); - if (!thermal_dbg->d_top) { + if (IS_ERR(thermal_dbg->d_top)) { kfree(thermal_dbg); return NULL; }