From patchwork Tue Sep 14 14:38:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 511289 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C79B1C4167D for ; Tue, 14 Sep 2021 14:38:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB234610FB for ; Tue, 14 Sep 2021 14:38:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233957AbhINOkH (ORCPT ); Tue, 14 Sep 2021 10:40:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233916AbhINOkC (ORCPT ); Tue, 14 Sep 2021 10:40:02 -0400 Received: from xavier.telenet-ops.be (xavier.telenet-ops.be [IPv6:2a02:1800:120:4::f00:14]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7905C0613C1 for ; Tue, 14 Sep 2021 07:38:43 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed20:d46f:7eb5:4a37:9d14]) by xavier.telenet-ops.be with bizsmtp id tqef2500S2aSKa101qef6H; Tue, 14 Sep 2021 16:38:41 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1mQ9a3-004VGm-5g; Tue, 14 Sep 2021 16:38:39 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1mQ9a2-0028yb-MB; Tue, 14 Sep 2021 16:38:38 +0200 From: Geert Uytterhoeven To: Robin van der Gracht , Miguel Ojeda , Rob Herring , Paul Burton Cc: Greg Kroah-Hartman , Pavel Machek , Marek Behun , devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v6 07/19] auxdisplay: linedisp: Use kmemdup_nul() helper Date: Tue, 14 Sep 2021 16:38:23 +0200 Message-Id: <20210914143835.511051-8-geert@linux-m68k.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210914143835.511051-1-geert@linux-m68k.org> References: <20210914143835.511051-1-geert@linux-m68k.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Use the existing kmemdup_nul() helper instead of open-coding the same operation. Signed-off-by: Geert Uytterhoeven --- v6: - No changes, v5: - No changes, v4: - No changes, v3: - No changes, v2: - No changes. --- drivers/auxdisplay/line-display.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/auxdisplay/line-display.c b/drivers/auxdisplay/line-display.c index 4b97c20ac0b381ee..3f35199bc39f511f 100644 --- a/drivers/auxdisplay/line-display.c +++ b/drivers/auxdisplay/line-display.c @@ -91,13 +91,10 @@ static int linedisp_display(struct linedisp *linedisp, const char *msg, return 0; } - new_msg = kmalloc(count + 1, GFP_KERNEL); + new_msg = kmemdup_nul(msg, count, GFP_KERNEL); if (!new_msg) return -ENOMEM; - memcpy(new_msg, msg, count); - new_msg[count] = 0; - kfree(linedisp->message); linedisp->message = new_msg;