From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Sat, 3 Feb 2024 07:51:04 +0000 (+0100)
Subject: nfc: hci: Save a few bytes of memory when registering a 'nfc_llc' engine
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=83cdd8db75085f3e415f420d6022f9c813ea50af;p=linux.git

nfc: hci: Save a few bytes of memory when registering a 'nfc_llc' engine

nfc_llc_register() calls pass a string literal as the 'name' parameter.

So kstrdup_const() can be used instead of kfree() to avoid a memory
allocation in such cases.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---

diff --git a/net/nfc/hci/llc.c b/net/nfc/hci/llc.c
index 480c17f372a53..ba91284f4086e 100644
--- a/net/nfc/hci/llc.c
+++ b/net/nfc/hci/llc.c
@@ -33,7 +33,7 @@ exit:
 static void nfc_llc_del_engine(struct nfc_llc_engine *llc_engine)
 {
 	list_del(&llc_engine->entry);
-	kfree(llc_engine->name);
+	kfree_const(llc_engine->name);
 	kfree(llc_engine);
 }
 
@@ -53,7 +53,7 @@ int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops)
 	if (llc_engine == NULL)
 		return -ENOMEM;
 
-	llc_engine->name = kstrdup(name, GFP_KERNEL);
+	llc_engine->name = kstrdup_const(name, GFP_KERNEL);
 	if (llc_engine->name == NULL) {
 		kfree(llc_engine);
 		return -ENOMEM;