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 8362AC64EC4 for ; Thu, 9 Mar 2023 16:02:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C140610E87B; Thu, 9 Mar 2023 16:02:36 +0000 (UTC) Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2241310E881 for ; Thu, 9 Mar 2023 16:02:27 +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-out2.suse.de (Postfix) with ESMTPS id B800E2017D; Thu, 9 Mar 2023 16:02:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377745; 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=IF7qw7uSWJcZb5FaybgvSCxkEvHFzuPQ1jc0G69w/cE=; b=vyel0prki1EuPSH1Aur9iWt58AApZgQdYoDnK+7lawNbPMnd6gizRh8aAQuZvVUPzjLW3x ar480W7CDYfdPZEHdE3I3MLa+i+M5zNvsRc93qYFTzbFgGUvyIl83m85AozAgmg54qT2R8 BQJWohSIRBusBBa0bGa3OYq3Zr59okE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377745; 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=IF7qw7uSWJcZb5FaybgvSCxkEvHFzuPQ1jc0G69w/cE=; b=tFG2udPAxdaB+v6HFkVOi+IphiHjOGhCN5vhAn3XQAS3fmG/ZAJKRZwyNVtjr2Ck3t1SdK bxtgTyssrE6x3lBA== 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 601C113A73; Thu, 9 Mar 2023 16:02:25 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id kFeiFhEDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:25 +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 052/101] fbdev/ocfb: Duplicate video-mode option string Date: Thu, 9 Mar 2023 17:01:12 +0100 Message-Id: <20230309160201.5163-53-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/ocfb.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/ocfb.c b/drivers/video/fbdev/ocfb.c index da7e1457e58f..9786c3641448 100644 --- a/drivers/video/fbdev/ocfb.c +++ b/drivers/video/fbdev/ocfb.c @@ -47,6 +47,7 @@ #define OCFB_NAME "OC VGA/LCD" +static char *mode_option_buf; static char *mode_option; static const struct fb_videomode default_mode = { @@ -77,7 +78,10 @@ static int __init ocfb_setup(char *options) while ((curr_opt = strsep(&options, ",")) != NULL) { if (!*curr_opt) continue; - mode_option = curr_opt; + + kfree(mode_option_buf); + mode_option_buf = kstrdup(curr_opt, GFP_KERNEL); // ignore errors + mode_option = mode_option_buf; } return 0; @@ -420,6 +424,7 @@ static int __init ocfb_init(void) static void __exit ocfb_exit(void) { platform_driver_unregister(&ocfb_driver); + kfree(mode_option_buf); } module_init(ocfb_init); -- 2.39.2