The debugfs_create_dir() function may fail and return error. If the
root directory not created, we can't create anything inside it. This
patch adds check for this case.
Signed-off-by: Alexander Kuleshov <kuleshovmail@xxxxxxxxx>
---
mm/cma_debug.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index f8e4b60..bfb46e2 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -171,6 +171,9 @@ static void cma_debugfs_add_one(struct cma *cma, int idx)
tmp = debugfs_create_dir(name, cma_debugfs_root);
+ if (!tmp)
+ return;
+
debugfs_create_file("alloc", S_IWUSR, tmp, cma,
&cma_alloc_fops);
--
2.5.0
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