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Signed-off-by: Christophe JAILLET Reviewed-by: Simon Horman --- net/nfc/hci/llc.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/net/nfc/hci/llc.c b/net/nfc/hci/llc.c index 2140f6724644..480c17f372a5 100644 --- a/net/nfc/hci/llc.c +++ b/net/nfc/hci/llc.c @@ -30,15 +30,19 @@ int __init nfc_llc_init(void) return r; } +static void nfc_llc_del_engine(struct nfc_llc_engine *llc_engine) +{ + list_del(&llc_engine->entry); + kfree(llc_engine->name); + kfree(llc_engine); +} + void nfc_llc_exit(void) { struct nfc_llc_engine *llc_engine, *n; - list_for_each_entry_safe(llc_engine, n, &llc_engines, entry) { - list_del(&llc_engine->entry); - kfree(llc_engine->name); - kfree(llc_engine); - } + list_for_each_entry_safe(llc_engine, n, &llc_engines, entry) + nfc_llc_del_engine(llc_engine); } int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops) @@ -82,9 +86,7 @@ void nfc_llc_unregister(const char *name) if (llc_engine == NULL) return; - list_del(&llc_engine->entry); - kfree(llc_engine->name); - kfree(llc_engine); + nfc_llc_del_engine(llc_engine); } struct nfc_llc *nfc_llc_allocate(const char *name, struct nfc_hci_dev *hdev, From patchwork Sat Feb 3 07:51:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 196202 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:9bc1:b0:106:209c:c626 with SMTP id op1csp899475dyc; Fri, 2 Feb 2024 23:53:30 -0800 (PST) X-Google-Smtp-Source: AGHT+IF5twKVoGAfrBpSh++O9cEtMBdE3mZRFHsblPV9fqS63Xot4ddeUSbwK8qauwtargRWTkHR X-Received: by 2002:a0c:cb07:0:b0:68c:6cc2:5a8f with SMTP id o7-20020a0ccb07000000b0068c6cc25a8fmr458242qvk.54.1706946809923; Fri, 02 Feb 2024 23:53:29 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1706946809; cv=pass; d=google.com; s=arc-20160816; b=hJXPdbifSWrQRrPzMF7JCd77xLgZ4HxCPcXo7ZEv2abe/tstTMYGyIOSyPMwntoXVN ns8oBQuWcxwI8hJKk9HEQYVzQK/SaPsR2l92zbr6QTjhWmL31JkiVBb/ylhM3nYtDR6o 2s31dsUVUK0/JgVfH0kOm5ewPHyQx65YO6HWdrvZSHbC5ABVSRx0YGta1ec8ZFnq+/Ev 5u4+TGnv4bqPC+o0y/q6yMH9JgMSKoHG2tVUm/wYMigl5v4pLXjyfp+emZHNieQjVwrh K1BRM1WdACG9B+H4IV4PooaO4+jSaqSTw0MpbKZ7VzSjASoZrs+MJm58mv0kC4xealn7 W+uQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=PvF+EwWrp7JXup44JQu6ssRQrUrUbuCCt5KLY27Imlo=; fh=I9IwSDBS9LOj3Qmc1L/34LmEjwfYADEVd4iOp/f6TZE=; b=NyFx5toVxKDlEMAP8Wul18r0SbxiYaWiQgg8YhQtnX5mtlYwOS03REElfSowEd95Fo aefp8OSwXrw/xN4YTsXTboiGkxoFBUbTl5ybhO8l+1+k5KLCgDf840dzofXbDI3OySPv Hzng+dfaxgRnqNr2uW+fVkwqKKVOKgjANfV81NFeuPUTQAZeLuqR3zVAfhodbyyfcBcE wS1r5wsBnFmTm219+LIepGchZ8nUoQm2gQmMMknruHQ02ym6Hlwq0Xa3TxGePGuN/GqC aaqKiukG1vTTrzVeeXGulyQuRCo5vcozuhi5xR67jbnJJD9OCnHXt0F08snhqhieZFfH gAQA==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@wanadoo.fr header.s=t20230301 header.b=U2lmYnlY; arc=pass (i=1 spf=pass spfdomain=wanadoo.fr dkim=pass dkdomain=wanadoo.fr dmarc=pass fromdomain=wanadoo.fr); spf=pass (google.com: domain of linux-kernel+bounces-50966-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-50966-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=wanadoo.fr X-Forwarded-Encrypted: i=1; AJvYcCV8d50kNMP1VNMivCiquJB4+nFAqv0oJKY1AZ2m9r1M7cMWqEJVhDJ9dCrrAg5ipXSjiRzTMv8Q7xZWQDeZkCPoWxF6Wg== Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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So kstrdup_const() can be used instead of kfree() to avoid a memory allocation in such cases. Signed-off-by: Christophe JAILLET Reviewed-by: Simon Horman --- 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 480c17f372a5..ba91284f4086 100644 --- a/net/nfc/hci/llc.c +++ b/net/nfc/hci/llc.c @@ -33,7 +33,7 @@ int __init nfc_llc_init(void) 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;