From patchwork Thu Mar 9 16:00:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 661268 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 B5E33C7618E for ; Thu, 9 Mar 2023 16:03:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231745AbjCIQDT (ORCPT ); Thu, 9 Mar 2023 11:03:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231205AbjCIQCU (ORCPT ); Thu, 9 Mar 2023 11:02:20 -0500 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E629EF7EF5; Thu, 9 Mar 2023 08:02:15 -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-out1.suse.de (Postfix) with ESMTPS id 789972214C; Thu, 9 Mar 2023 16:02:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377734; 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=5JMjEoQogcrjmsqu51HKwpFrv2iLEJJ/Oo/4GHoGRws=; b=sNBIHSrLX9UvltrCxEcNhqallLDoo+9VXOnZec4nZMBSLwzlfl2c3nz7lONy+VXn9VMXMI U5e+3ktrbB6Qlbel+eXxH3jkO2I8TQXYdu6X0LIBqQAUtQDpKCW9vookqY/06OI9mC3aCl eS1ru2OwhdknbFgbq2x1o/haR1PVf1I= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377734; 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=5JMjEoQogcrjmsqu51HKwpFrv2iLEJJ/Oo/4GHoGRws=; b=4P9Op4fI40mAiOVLUlkOpvDux7d9MlcMnN8FO/CPJMtW+wvKHIVh+dcEAPZ04A3kieV2XL vdrX+cBk3qouBODQ== 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 188A21391B; Thu, 9 Mar 2023 16:02:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id cCEKBQYDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:14 +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 024/101] fbdev/gbefb: Duplicate video-mode option string Date: Thu, 9 Mar 2023 17:00:44 +0100 Message-Id: <20230309160201.5163-25-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/gbefb.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/video/fbdev/gbefb.c b/drivers/video/fbdev/gbefb.c index 000b4aa44241..6afccd4ef0a8 100644 --- a/drivers/video/fbdev/gbefb.c +++ b/drivers/video/fbdev/gbefb.c @@ -1083,7 +1083,7 @@ ATTRIBUTE_GROUPS(gbefb); * Initialization */ -static int gbefb_setup(char *options) +static int gbefb_setup(char *options, struct device *dev) { char *this_opt; @@ -1108,8 +1108,9 @@ static int gbefb_setup(char *options) gbe_mem_size = CONFIG_FB_GBE_MEM * 1024 * 1024; if (gbe_mem_size < TILE_SIZE) gbe_mem_size = TILE_SIZE; - } else - mode_option = this_opt; + } else { + mode_option = devm_kstrdup(dev, this_opt, GFP_KERNEL); // ignore errors + } } return 0; } @@ -1132,7 +1133,7 @@ static int gbefb_probe(struct platform_device *p_dev) ret = -ENODEV; goto out_release_framebuffer; } - gbefb_setup(options); + gbefb_setup(options, &p_dev->dev); #endif if (!request_mem_region(GBE_BASE, sizeof(struct sgi_gbe), "GBE")) {