linux-kernel - [PATCH 2/3] dmatest: remove IS_ERR_OR

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Date:	Tue, 23 Jul 2013 18:36:47 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Dan Williams <djbw@...com>, Vinod Koul <vinod.koul@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dave Jiang <dave.jiang@...el.com>,
	"Blin, Jerome" <jerome.blin@...el.com>,
	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 2/3] 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@...ux.intel.com>
---
 drivers/dma/dmatest.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 91716f4..eae5989 100644
--- 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)
-- 
1.8.3.2

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