USB: dwc3: no need to check return value of debugfs_create functions

[linux-2.6-microblaze.git] / drivers / usb / dwc3 / debugfs.c

diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
index 2f07be1..df8e73e 100644 (file)
--- a/drivers/usb/dwc3/debugfs.c
+++ b/drivers/usb/dwc3/debugfs.c
@@ -716,9 +716,6 @@ static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
        struct dentry           *dir;
 
        dir = debugfs_create_dir(dep->name, parent);
-       if (IS_ERR_OR_NULL(dir))
-               return;
-
        dwc3_debugfs_create_endpoint_files(dep, dir);
 }
 
@@ -740,49 +737,31 @@ static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
 void dwc3_debugfs_init(struct dwc3 *dwc)
 {
        struct dentry           *root;
-       struct dentry           *file;
-
-       root = debugfs_create_dir(dev_name(dwc->dev), NULL);
-       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) {
-               debugfs_remove_recursive(root);
+       if (!dwc->regset)
                return;
-       }
 
        dwc->regset->regs = dwc3_regs;
        dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
        dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
 
-       file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
-       if (!file)
-               dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
+       root = debugfs_create_dir(dev_name(dwc->dev), NULL);
+       dwc->root = root;
+
+       debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
 
        if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
-               file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
-                               dwc, &dwc3_mode_fops);
-               if (!file)
-                       dev_dbg(dwc->dev, "Can't create debugfs mode\n");
+               debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc,
+                                   &dwc3_mode_fops);
        }
 
        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)
-                       dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
-
-               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");
-
+               debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, dwc,
+                                   &dwc3_testmode_fops);
+               debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, dwc,
+                                   &dwc3_link_state_fops);
                dwc3_debugfs_create_endpoint_dirs(dwc, root);
        }
 }