From nobody Thu Dec 25 05:12:32 2025 Received: from smtp.smtpout.orange.fr (smtp-21.smtpout.orange.fr [80.12.242.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C6DFAC8C4 for ; Sat, 20 Jan 2024 09:56:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.12.242.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705744574; cv=none; b=eFgHhZdh0YevGmBnE+cQsa5TU82vPVOo9Foi3wE+i5zQfwbV8OjoWtGU7Nq0uTwY0NW2/gba/wLBqdF8BVViwyKPXvN0fAtJ9gh1tAhvY2oXHvxUIG3PGVAm+IbEJgWOlKgNqMmUoogd9JyS6r9sGkKFc00qNJkQtlmaeGERKu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705744574; c=relaxed/simple; bh=BOcX8KWEnibygk4fjeA6ev0h6FDA5vSRBlJ1zvGoVtc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gzTyNsv8bgg7L+9H4yn6t80c44ZLGqR4e+3Rkhjv06K1/SEbf25C0NF67r8EQ+9Kqurzy61iXqGrlDZg2ljrpfSWNWqgJxTvWNy+hL0W3B30g75IQ8hmrStubXip0pciLsUGjOHttOv0ss9htB9VHVfitOrYu50X8ercW8/jhNU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wanadoo.fr; spf=pass smtp.mailfrom=wanadoo.fr; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b=dlikXYNv; arc=none smtp.client-ip=80.12.242.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b="dlikXYNv" Received: from fedora.home ([92.140.202.140]) by smtp.orange.fr with ESMTPA id R859rc6amXxngR859rqY8F; Sat, 20 Jan 2024 10:56:09 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wanadoo.fr; s=t20230301; t=1705744569; bh=6/Q426ZzIQUJLm346t0hoGiEGD7EVC/MiQvvpwN1st0=; h=From:To:Cc:Subject:Date; b=dlikXYNvorCGCI/zMlw+kQotCzT38LYn+0/29+wiIY+D+2X0okIBuyhrqgbaTeGCE MLiREdT44J3NpJ91NyxVIJW5JAzfiezWkZW4GDFgFi821WNWYGUbNzWWzbCRr6ufYm nGRStL1OW06bVoduZxNUjOatbL1M7gBTMsquonPrYmJ8uiWol4sU8cEu5fBOY5BxSc CnCYtDo7by24j06iVPoUz84OMhcVsDts9s9FXWA6xOikHfBwJTEDzltFQsJGbcw/OD QV3w9sOphKFjXX8Jl8b7kqp5BChAZd90U2SLDORzsqRgQMon3hYjIng0NZ/wx1IDUs gSdpIxW6k/3Dw== X-ME-Helo: fedora.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 20 Jan 2024 10:56:09 +0100 X-ME-IP: 92.140.202.140 From: Christophe JAILLET To: Krzysztof Kozlowski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , netdev@vger.kernel.org Subject: [PATCH] nfc: hci: Save a few bytes of memory when registering a 'nfc_llc' engine Date: Sat, 20 Jan 2024 10:56:06 +0100 Message-ID: <6d2b8c390907dcac2e4dc6e71f1b2db2ef8abef1.1705744530.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Krzysztof Kozlowski --- net/nfc/hci/llc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/nfc/hci/llc.c b/net/nfc/hci/llc.c index 2140f6724644..8c7b5a817b25 100644 --- a/net/nfc/hci/llc.c +++ b/net/nfc/hci/llc.c @@ -49,7 +49,7 @@ int nfc_llc_register(const char *name, const struct nfc_l= lc_ops *ops) if (llc_engine =3D=3D NULL) return -ENOMEM; =20 - llc_engine->name =3D kstrdup(name, GFP_KERNEL); + llc_engine->name =3D kstrdup_const(name, GFP_KERNEL); if (llc_engine->name =3D=3D NULL) { kfree(llc_engine); return -ENOMEM; @@ -83,7 +83,7 @@ void nfc_llc_unregister(const char *name) return; =20 list_del(&llc_engine->entry); - kfree(llc_engine->name); + kfree_const(llc_engine->name); kfree(llc_engine); } =20 --=20 2.43.0