[PATCH -next] nvdimm: Remove redundant null pointer checks

[Li Zetao]

Since the debugfs_create_dir() never returns a null pointer, checking
the return value for a null pointer is redundant, and using IS_ERR is
safe enough.

Signed-off-by: Li Zetao <lizet...@huawei.com>
---
 drivers/nvdimm/btt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 423dcd190906..4592c86d5eac 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -227,7 +227,7 @@ static void arena_debugfs_init(struct arena_info *a, struct 
dentry *parent,
 
        snprintf(dirname, 32, "arena%d", idx);
        d = debugfs_create_dir(dirname, parent);
-       if (IS_ERR_OR_NULL(d))
+       if (IS_ERR(d))
                return;
        a->debugfs_dir = d;
 
@@ -1703,7 +1703,7 @@ static int __init nd_btt_init(void)
        int rc = 0;
 
        debugfs_root = debugfs_create_dir("btt", NULL);
-       if (IS_ERR_OR_NULL(debugfs_root))
+       if (IS_ERR(debugfs_root))
                rc = -ENXIO;
 
        return rc;
-- 
2.34.1