From patchwork Thu Mar 9 16:00:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 661262 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36306C77B6C for ; Thu, 9 Mar 2023 16:03:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231429AbjCIQD3 (ORCPT ); Thu, 9 Mar 2023 11:03:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231608AbjCIQCU (ORCPT ); Thu, 9 Mar 2023 11:02:20 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB759F7EFE; Thu, 9 Mar 2023 08:02:17 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 2A09820186; Thu, 9 Mar 2023 16:02:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377736; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=79twlirOUmPL24Yx299EScp7mDUr++Nf+Ag16S4Xxjs=; b=J8/6/7EEKDakmOzjuqFZ+wJphKc8bmbN8uy81393+ZynnFwzLZQD1dOhcO2PNr4o877mX1 Ia2b9IHWAPHVVmBtaNcZQFHNcEY2T3j13kyfRIrVYsD4ldyscl1OxHI8F6KJ+gdXWhghZP m9AIHZYMmWqx/hOTBqmxPRh+JA92IfA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377736; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=79twlirOUmPL24Yx299EScp7mDUr++Nf+Ag16S4Xxjs=; b=ysXUn8HbMlNrgNIfgiTqsz4EOHt+nWtL9fHeP6kDN6Cff9+KI5dfv41EtZS0h0lwn/TTgq sbxm4h5lYYBZDXCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id BBDC91391B; Thu, 9 Mar 2023 16:02:15 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id EAnxLAcDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:15 +0000 From: Thomas Zimmermann To: deller@gmx.de, geert+renesas@glider.be, timur@kernel.org, rdunlap@infradead.org, paulus@samba.org, benh@kernel.crashing.org, linux@armlinux.org.uk, pjones@redhat.com, adaplas@gmail.com, s.hauer@pengutronix.de, shawnguo@kernel.org, mbroemme@libmpq.org, thomas@winischhofer.net, James.Bottomley@HansenPartnership.com, sudipm.mukherjee@gmail.com, teddy.wang@siliconmotion.com, corbet@lwn.net Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 028/101] fbdev/grvga: Duplicate video-mode option string Date: Thu, 9 Mar 2023 17:00:48 +0100 Message-Id: <20230309160201.5163-29-tzimmermann@suse.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230309160201.5163-1-tzimmermann@suse.de> References: <20230309160201.5163-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Assume that the driver does not own the option string or its substrings and hence duplicate the option string for the video mode. Allocate the copy's memory with devm_kstrdup(), as the driver parses the option string once per probed device. Linux will automatically free the memory upon releasing the device. Done in preparation of switching the driver to struct option_iter and constifying the option string. Signed-off-by: Thomas Zimmermann --- drivers/video/fbdev/grvga.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/grvga.c b/drivers/video/fbdev/grvga.c index 24818b276241..28c2e0e0763a 100644 --- a/drivers/video/fbdev/grvga.c +++ b/drivers/video/fbdev/grvga.c @@ -370,7 +370,7 @@ static int grvga_probe(struct platform_device *dev) else if (!strncmp(this_opt, "size", 4)) grvga_mem_size = simple_strtoul(this_opt + 5, NULL, 0); else - mode_opt = this_opt; + mode_opt = devm_kstrdup(&dev->dev, opt, GFP_KERNEL); // ignore errors } par = info->par;