mtd: nand: nandsim: fix error check

debugfs_create_dir() and debugfs_create_file() returns NULL on error or
a pointer on success. They do not return the error value with ERR_PTR.
So we should not check the return with IS_ERR_OR_NULL, instead we
should just check for NULL.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index c76287a..c847426 100644 (file)
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -525,24 +525,20 @@ static int nandsim_debugfs_create(struct nandsim *dev)
 {
        struct nandsim_debug_info *dbg = &dev->dbg;
        struct dentry *dent;
-       int err;
 
        if (!IS_ENABLED(CONFIG_DEBUG_FS))
                return 0;
 
        dent = debugfs_create_dir("nandsim", NULL);
-       if (IS_ERR_OR_NULL(dent)) {
-               int err = dent ? -ENODEV : PTR_ERR(dent);
-
-               NS_ERR("cannot create \"nandsim\" debugfs directory, err %d\n",
-                       err);
-               return err;
+       if (!dent) {
+               NS_ERR("cannot create \"nandsim\" debugfs directory\n");
+               return -ENODEV;
        }
        dbg->dfs_root = dent;
 
        dent = debugfs_create_file("wear_report", S_IRUSR,
                                   dbg->dfs_root, dev, &dfs_fops);
-       if (IS_ERR_OR_NULL(dent))
+       if (!dent)
                goto out_remove;
        dbg->dfs_wear_report = dent;
 
@@ -550,8 +546,7 @@ static int nandsim_debugfs_create(struct nandsim *dev)
 
 out_remove:
        debugfs_remove_recursive(dbg->dfs_root);
-       err = dent ? PTR_ERR(dent) : -ENODEV;
-       return err;
+       return -ENODEV;
 }
 
 /**