[Kernel] [PATCH OpenHarmony-4.19 17/49] pstore: no need to check return value of debugfs_create functions

From: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> stable inclusion from stable-5.10 category: feature commit:fa1af7583e8012c471ee45d5b1703123fe45a9f3 issue: #I4919J -------------------------------- When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Kees Cook <keescook(a)chromium.org> Cc: Anton Vorontsov <anton(a)enomsg.org> Cc: Colin Cross <ccross(a)android.com> Cc: Tony Luck <tony.luck(a)intel.com> Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Kees Cook <keescook(a)chromium.org> (cherry picked from commit fa1af7583e8012c471ee45d5b1703123fe45a9f3) Signed-off-by: roger <kongzhengrong(a)huawei.com> --- fs/pstore/ftrace.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/fs/pstore/ftrace.c b/fs/pstore/ftrace.c index b8a0931568f8..fd9468928bef 100644 --- a/fs/pstore/ftrace.c +++ b/fs/pstore/ftrace.c @@ -120,27 +120,13 @@ static struct dentry *pstore_ftrace_dir; void pstore_register_ftrace(void) { - struct dentry *file; - if (!psinfo->write) return; pstore_ftrace_dir = debugfs_create_dir("pstore", NULL); - if (!pstore_ftrace_dir) { - pr_err("%s: unable to create pstore directory\n", __func__); - return; - } - - file = debugfs_create_file("record_ftrace", 0600, pstore_ftrace_dir, - NULL, &pstore_knob_fops); - if (!file) { - pr_err("%s: unable to create record_ftrace file\n", __func__); - goto err_file; - } - return; -err_file: - debugfs_remove(pstore_ftrace_dir); + debugfs_create_file("record_ftrace", 0600, pstore_ftrace_dir, NULL, + &pstore_knob_fops); } void pstore_unregister_ftrace(void) -- 2.17.1