wimax: 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.

This cleans up a lot of unneeded code and logic around the debugfs wimax
files, making all of this much simpler and easier to understand.

Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: linux-wimax@intel.com
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 34 deletions

diff --git a/net/wimax/debugfs.c b/net/wimax/debugfs.c
index 1af56df30276..3c54bb6b925a 100644
--- a/net/wimax/debugfs.c
+++ b/net/wimax/debugfs.c
@@ -13,49 +13,23 @@
 #define D_SUBMODULE debugfs
 #include "debug-levels.h"
 
-
-#define __debugfs_register(prefix, name, parent)			\
-do {									\
-	result = d_level_register_debugfs(prefix, name, parent);	\
-	if (result < 0)							\
-		goto error;						\
-} while (0)
-
-
-int wimax_debugfs_add(struct wimax_dev *wimax_dev)
+void wimax_debugfs_add(struct wimax_dev *wimax_dev)
 {
-	int result;
 	struct net_device *net_dev = wimax_dev->net_dev;
-	struct device *dev = net_dev->dev.parent;
 	struct dentry *dentry;
 	char buf[128];
 
 	snprintf(buf, sizeof(buf), "wimax:%s", net_dev->name);
 	dentry = debugfs_create_dir(buf, NULL);
-	result = PTR_ERR(dentry);
-	if (IS_ERR(dentry)) {
-		if (result == -ENODEV)
-			result = 0;	/* No debugfs support */
-		else
-			dev_err(dev, "Can't create debugfs dentry: %d\n",
-				result);
-		goto out;
-	}
 	wimax_dev->debugfs_dentry = dentry;
-	__debugfs_register("wimax_dl_", debugfs, dentry);
-	__debugfs_register("wimax_dl_", id_table, dentry);
-	__debugfs_register("wimax_dl_", op_msg, dentry);
-	__debugfs_register("wimax_dl_", op_reset, dentry);
-	__debugfs_register("wimax_dl_", op_rfkill, dentry);
-	__debugfs_register("wimax_dl_", op_state_get, dentry);
-	__debugfs_register("wimax_dl_", stack, dentry);
-	result = 0;
-out:
-	return result;
 
-error:
-	debugfs_remove_recursive(wimax_dev->debugfs_dentry);
-	return result;
+	d_level_register_debugfs("wimax_dl_", debugfs, dentry);
+	d_level_register_debugfs("wimax_dl_", id_table, dentry);
+	d_level_register_debugfs("wimax_dl_", op_msg, dentry);
+	d_level_register_debugfs("wimax_dl_", op_reset, dentry);
+	d_level_register_debugfs("wimax_dl_", op_rfkill, dentry);
+	d_level_register_debugfs("wimax_dl_", op_state_get, dentry);
+	d_level_register_debugfs("wimax_dl_", stack, dentry);
 }
 
 void wimax_debugfs_rm(struct wimax_dev *wimax_dev)