dmatest: remove IS_ERR_OR_NULL checks of debugfs calls

There is a really little chance when we are able to create a directory and are
not able to create nodes under it. So, this patch just removes those checks.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dan Williams <djbw@fb.com>

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 91716f4..eae5989 100644 (file)
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -1131,7 +1131,6 @@ static const struct file_operations dtf_results_fops = {
 static int dmatest_register_dbgfs(struct dmatest_info *info)
 {
        struct dentry *d;
-       int ret = -ENOMEM;
 
        d = debugfs_create_dir("dmatest", NULL);
        if (IS_ERR(d))
@@ -1142,24 +1141,18 @@ static int dmatest_register_dbgfs(struct dmatest_info *info)
        info->root = d;
 
        /* Run or stop threaded test */
-       d = debugfs_create_file("run", S_IWUSR | S_IRUGO, info->root,
-                               info, &dtf_run_fops);
-       if (IS_ERR_OR_NULL(d))
-               goto err_node;
+       debugfs_create_file("run", S_IWUSR | S_IRUGO, info->root, info,
+                           &dtf_run_fops);
 
        /* Results of test in progress */
-       d = debugfs_create_file("results", S_IRUGO, info->root, info,
-                               &dtf_results_fops);
-       if (IS_ERR_OR_NULL(d))
-               goto err_node;
+       debugfs_create_file("results", S_IRUGO, info->root, info,
+                           &dtf_results_fops);
 
        return 0;
 
-err_node:
-       debugfs_remove_recursive(info->root);
 err_root:
        pr_err("dmatest: Failed to initialize debugfs\n");
-       return ret;
+       return -ENOMEM;
 }
 
 static int __init dmatest_init(void)