[PATCH] quantenna: no need to check return value of debugfs_create functions

[Greg Kroah-Hartman]

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.

Cc: Igor Mitsyanko <imitsyanko@xxxxxxxxxxxxx>
Cc: Avinash Patil <avinashp@xxxxxxxxxxxxx>
Cc: Sergey Matyukevich <smatyukevich@xxxxxxxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/wireless/quantenna/qtnfmac/debug.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/debug.c b/drivers/net/wireless/quantenna/qtnfmac/debug.c
index 9f826b9ef5d9..10156780ea37 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/debug.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/debug.c
@@ -16,17 +16,9 @@
 
 #include "debug.h"
 
-#undef pr_fmt
-#define pr_fmt(fmt)	"qtnfmac dbg: %s: " fmt, __func__
-
 void qtnf_debugfs_init(struct qtnf_bus *bus, const char *name)
 {
 	bus->dbg_dir = debugfs_create_dir(name, NULL);
-
-	if (IS_ERR_OR_NULL(bus->dbg_dir)) {
-		pr_warn("failed to create debugfs root dir\n");
-		bus->dbg_dir = NULL;
-	}
 }
 
 void qtnf_debugfs_remove(struct qtnf_bus *bus)
@@ -38,9 +30,5 @@ void qtnf_debugfs_remove(struct qtnf_bus *bus)
 void qtnf_debugfs_add_entry(struct qtnf_bus *bus, const char *name,
 			    int (*fn)(struct seq_file *seq, void *data))
 {
-	struct dentry *entry;
-
-	entry = debugfs_create_devm_seqfile(bus->dev, name, bus->dbg_dir, fn);
-	if (IS_ERR_OR_NULL(entry))
-		pr_warn("failed to add entry (%s)\n", name);
+	debugfs_create_devm_seqfile(bus->dev, name, bus->dbg_dir, fn);
 }
-- 
2.20.1