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authorzhong jiang <zhongjiang@huawei.com>2018-10-30 15:04:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-31 08:54:12 -0700
commitea6f650465c61c70b4c96648ed2cb8a0c55db337 (patch)
tree76a4bf7f915a05fa348bef632f2449bce4cb23b7
parentde0d22e50cd3d57277f073ccf65d57aa519d6888 (diff)
kernel/fail_function.c: remove meaningless null pointer check before debugfs_remove_recursive
debugfs_remove_recursive() has taken the null pointer into account. just remove the null check before debugfs_remove_recursive(). Link: http://lkml.kernel.org/r/1537494404-16473-1-git-send-email-zhongjiang@huawei.com Signed-off-by: zhong jiang <zhongjiang@huawei.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/fail_function.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/fail_function.c b/kernel/fail_function.c
index bc80a4e268c0..17f75b545f66 100644
--- a/kernel/fail_function.c
+++ b/kernel/fail_function.c
@@ -173,8 +173,7 @@ static void fei_debugfs_remove_attr(struct fei_attr *attr)
struct dentry *dir;
dir = debugfs_lookup(attr->kp.symbol_name, fei_debugfs_dir);
- if (dir)
- debugfs_remove_recursive(dir);
+ debugfs_remove_recursive(dir);
}
static int fei_kprobe_handler(struct kprobe *kp, struct pt_regs *regs)