dmaengine: bcm-sba-raid: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Also, because there is no need to save the file dentry, remove the
variable that was saving it as it was never even being used once set.

Cc: Vinod Koul <vkoul@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c
index fa81d0177765bad98888ebc0eaa40e2aa1980a2a..275e90fa829de8896308cc4c2dc5b604a6edee92 100644 (file)
--- a/drivers/dma/bcm-sba-raid.c
+++ b/drivers/dma/bcm-sba-raid.c
@@ -164,7 +164,6 @@ struct sba_device {
        struct list_head reqs_free_list;
        /* DebugFS directory entries */
        struct dentry *root;
-       struct dentry *stats;
 };
 
 /* ====== Command helper routines ===== */
@@ -1716,17 +1715,11 @@ static int sba_probe(struct platform_device *pdev)
 
        /* Create debugfs root entry */
        sba->root = debugfs_create_dir(dev_name(sba->dev), NULL);
-       if (IS_ERR_OR_NULL(sba->root)) {
-               dev_err(sba->dev, "failed to create debugfs root entry\n");
-               sba->root = NULL;
-               goto skip_debugfs;
-       }
 
        /* Create debugfs stats entry */
-       sba->stats = debugfs_create_devm_seqfile(sba->dev, "stats", sba->root,
-                                                sba_debugfs_stats_show);
-       if (IS_ERR_OR_NULL(sba->stats))
-               dev_err(sba->dev, "failed to create debugfs stats file\n");
+       debugfs_create_devm_seqfile(sba->dev, "stats", sba->root,
+                                   sba_debugfs_stats_show);
+
 skip_debugfs:
 
        /* Register DMA device with Linux async framework */