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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/net/wireless/broadcom/brcm80211/brcmsmac/debug.c
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@@ -37,33 +37,23 @@
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 void brcms_debugfs_init(void)
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 {
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 	root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
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-	if (IS_ERR(root_folder))
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-		root_folder = NULL;
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 }
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 void brcms_debugfs_exit(void)
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 {
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-	if (!root_folder)
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-		return;
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-
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 	debugfs_remove_recursive(root_folder);
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 	root_folder = NULL;
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 }
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-int brcms_debugfs_attach(struct brcms_pub *drvr)
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+void brcms_debugfs_attach(struct brcms_pub *drvr)
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 {
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-	if (!root_folder)
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-		return -ENODEV;
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-
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 	drvr->dbgfs_dir = debugfs_create_dir(
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 		 dev_name(&drvr->wlc->hw->d11core->dev), root_folder);
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-	return PTR_ERR_OR_ZERO(drvr->dbgfs_dir);
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 }
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 void brcms_debugfs_detach(struct brcms_pub *drvr)
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 {
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-	if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
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-		debugfs_remove_recursive(drvr->dbgfs_dir);
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+	debugfs_remove_recursive(drvr->dbgfs_dir);
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 }
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 struct dentry *brcms_debugfs_get_devdir(struct brcms_pub *drvr)
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@@ -196,7 +186,7 @@
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 	.llseek = seq_lseek
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 };
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-static int
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+static void
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 brcms_debugfs_add_entry(struct brcms_pub *drvr, const char *fn,
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 			int (*read_fn)(struct seq_file *seq, void *data))
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 {
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@@ -204,27 +194,18 @@
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 	struct dentry *dentry =  drvr->dbgfs_dir;
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 	struct brcms_debugfs_entry *entry;
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-	if (IS_ERR_OR_NULL(dentry))
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-		return -ENOENT;
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-
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 	entry = devm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
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 	if (!entry)
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-		return -ENOMEM;
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+		return;
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 	entry->read = read_fn;
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 	entry->drvr = drvr;
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-	dentry = debugfs_create_file(fn, 0444, dentry, entry,
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-				     &brcms_debugfs_def_ops);
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-
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-	return PTR_ERR_OR_ZERO(dentry);
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+	debugfs_create_file(fn, 0444, dentry, entry, &brcms_debugfs_def_ops);
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 }
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 void brcms_debugfs_create_files(struct brcms_pub *drvr)
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 {
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-	if (IS_ERR_OR_NULL(drvr->dbgfs_dir))
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-		return;
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-
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 	brcms_debugfs_add_entry(drvr, "hardware", brcms_debugfs_hardware_read);
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 	brcms_debugfs_add_entry(drvr, "macstat", brcms_debugfs_macstat_read);
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 }