usb: dwc3: make dwc3_debugfs_init return value be void

Debugfs init failure is not so important. We can continue our job on
this failure. Also no break need for debugfs_create_file call failure.

Signed-off-by: Du, Changbin <changbin.du@intel.com>

[felipe.balbi@linux.intel.com :
	- remove out-of-memory message, we get that from OOM.
	- switch dev_err() to dev_dbg() ]

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

1 files changed, 19 insertions, 36 deletions

diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
index 9ac37fe..81faddc 100644
--- a/drivers/usb/dwc3/debugfs.c
+++ b/drivers/usb/dwc3/debugfs.c
@@ -618,24 +618,23 @@ static const struct file_operations dwc3_link_state_fops = {
 	.release		= single_release,
 };
 
-int dwc3_debugfs_init(struct dwc3 *dwc)
+void dwc3_debugfs_init(struct dwc3 *dwc)
 {
 	struct dentry		*root;
-	struct dentry		*file;
-	int			ret;
+	struct dentry           *file;
 
 	root = debugfs_create_dir(dev_name(dwc->dev), NULL);
-	if (!root) {
-		ret = -ENOMEM;
-		goto err0;
+	if (IS_ERR_OR_NULL(root)) {
+		if (!root)
+			dev_err(dwc->dev, "Can't create debugfs root\n");
+		return;
 	}
-
 	dwc->root = root;
 
 	dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
 	if (!dwc->regset) {
-		ret = -ENOMEM;
-		goto err1;
+		debugfs_remove_recursive(root);
+		return;
 	}
 
 	dwc->regset->regs = dwc3_regs;
@@ -643,44 +642,28 @@ int dwc3_debugfs_init(struct dwc3 *dwc)
 	dwc->regset->base = dwc->regs;
 
 	file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
+	if (!file)
+		dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
 
 	if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
 		file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
 				dwc, &dwc3_mode_fops);
-		if (!file) {
-			ret = -ENOMEM;
-			goto err1;
-		}
+		if (!file)
+			dev_dbg(dwc->dev, "Can't create debugfs mode\n");
 	}
 
 	if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
 			IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
 		file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
 				dwc, &dwc3_testmode_fops);
-		if (!file) {
-			ret = -ENOMEM;
-			goto err1;
-		}
-
-		file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
-				dwc, &dwc3_link_state_fops);
-		if (!file) {
-			ret = -ENOMEM;
-			goto err1;
-		}
-	}
+		if (!file)
+			dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
 
-	return 0;
-
-err1:
-	debugfs_remove_recursive(root);
-
-err0:
-	return ret;
+		file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
+				root, dwc, &dwc3_link_state_fops);
+		if (!file)
+			dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
+	}
 }
 
 void dwc3_debugfs_exit(struct dwc3 *dwc)