From mboxrd@z Thu Jan 1 00:00:00 1970 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD3AAC61DA4 for ; Thu, 9 Mar 2023 16:03:05 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CE89910E893; Thu, 9 Mar 2023 16:02:38 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id BA63F10E862 for ; Thu, 9 Mar 2023 16:02:29 +0000 (UTC) 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-out1.suse.de (Postfix) with ESMTPS id 628AD2215A; Thu, 9 Mar 2023 16:02:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377748; 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=U+Wv5+2Mg/OOpac2b+Kt6VAraiPSH3rcxItITwlujo0=; b=2MNMPBZYCIIHTJ2a9JkvDWsYV8evjucSV74au32ruPU/hzE/mOYrSxmf61i7KgGaAYkliZ DWu+fI20MDJORKJm3G1h6mvegZdTJ5/Fl91EZGDPqh1Goif9fF/ROHx893iPmOCjMZAniT IRpWPGDs9DVrRLU/zkJD4qSX+cGhguI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377748; 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=U+Wv5+2Mg/OOpac2b+Kt6VAraiPSH3rcxItITwlujo0=; b=IYkv7jGmizkWRSS1WbdG2KFhNI5g5MrC25KLR887jQRD8KgRS6cMUcN2U/skNhJzjD0g2k SMKmJL+ohR28VlCg== 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 09A8C1391B; Thu, 9 Mar 2023 16:02:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 0CqGARQDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:28 +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 Subject: [PATCH v2 059/101] fbdev/pm3fb: Duplicate video-mode option string Date: Thu, 9 Mar 2023 17:01:19 +0100 Message-Id: <20230309160201.5163-60-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 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Zimmermann , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 kstrdup() and free it in the module's exit function. Done in preparation of switching the driver to struct option_iter and constifying the option string. v2: * replace static memory with kstrdup()/kfree() (Geert) Signed-off-by: Thomas Zimmermann --- drivers/video/fbdev/pm3fb.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/pm3fb.c b/drivers/video/fbdev/pm3fb.c index b46a471df9ae..b6b378e7554d 100644 --- a/drivers/video/fbdev/pm3fb.c +++ b/drivers/video/fbdev/pm3fb.c @@ -54,6 +54,7 @@ * Driver data */ static int hwcursor = 1; +static char *mode_option_buf; static char *mode_option; static bool noaccel; static bool nomtrr; @@ -1526,8 +1527,11 @@ static int __init pm3fb_setup(char *options) hwcursor = simple_strtoul(this_opt + 9, NULL, 0); else if (!strncmp(this_opt, "nomtrr", 6)) nomtrr = 1; - else - mode_option = this_opt; + else { + kfree(mode_option_buf); + mode_option_buf = kstrdup(this_opt, GFP_KERNEL); // ignore errors + mode_option = mode_option_buf; + } } return 0; } @@ -1558,6 +1562,7 @@ static int __init pm3fb_init(void) static void __exit pm3fb_exit(void) { pci_unregister_driver(&pm3fb_driver); + kfree(mode_option_buf); } module_exit(pm3fb_exit); -- 2.39.2