From patchwork Thu Mar 9 16:00:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 662251 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 4CA71C7618B for ; Thu, 9 Mar 2023 16:03:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231865AbjCIQDT (ORCPT ); Thu, 9 Mar 2023 11:03:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231583AbjCIQCT (ORCPT ); Thu, 9 Mar 2023 11:02:19 -0500 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58CFBF7EEB; 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 130A922146; 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=ThHqTav4uwh2rVs7lCpTQaurYmXorgnHNJfG5xnTYZU=; b=JI/MM8UOj3mttyyvNxQT55J/DxrPlDbv/0caRtrtlq8Jc0peUKF8xVYKT2FaC1z4WrWpnU vOiGRr6uyQzJmVzrMBXtTq1loGz9P5ib1QR66nxFPW5EPvfOU2RpqzEqvPKP+o0FTO+M5T nQM5DVwKaki7iMgitGDhenysoa2oZrw= 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=ThHqTav4uwh2rVs7lCpTQaurYmXorgnHNJfG5xnTYZU=; b=v4AQH/idjIDBITGE+v54gw4Arl0gq7SNLszKCyHqthcol/GcusstzRAfHdaE7J9qA+5p1k XL5jStaexJg5AqDQ== 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 A799D13A73; Thu, 9 Mar 2023 16:02:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id YAPyJwUDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:13 +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 023/101] fbdev/fsl-diu-fb: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:00:43 +0100 Message-Id: <20230309160201.5163-24-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 Use struct option_iter to walk over the individual options in the driver's option string. Replaces the hand-written strsep() loop with a clean interface. The helpers for struct option_iter handle empty option strings and empty options transparently. The struct's _init and _release functions duplicate and release the option string's memory buffer as needed. Done in preparation of constifying the option string. Signed-off-by: Thomas Zimmermann --- drivers/video/fbdev/fsl-diu-fb.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/video/fbdev/fsl-diu-fb.c b/drivers/video/fbdev/fsl-diu-fb.c index 033bbf0c40b7..78996995568c 100644 --- a/drivers/video/fbdev/fsl-diu-fb.c +++ b/drivers/video/fbdev/fsl-diu-fb.c @@ -12,6 +12,7 @@ * Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix */ +#include #include #include #include @@ -1843,17 +1844,15 @@ static int fsl_diu_remove(struct platform_device *pdev) } #ifndef MODULE -static int __init fsl_diu_setup(char *options) +static int __init fsl_diu_setup(const char *options) { + struct option_iter iter; char *opt; unsigned long val; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((opt = strsep(&options, ",")) != NULL) { - if (!*opt) - continue; + while (option_iter_next(&iter, &opt)) { if (!strncmp(opt, "monitor=", 8)) { monitor_port = fsl_diu_name_to_port(opt + 8); } else if (!strncmp(opt, "bpp=", 4)) { @@ -1866,6 +1865,8 @@ static int __init fsl_diu_setup(char *options) } } + option_iter_release(&iter); + return 0; } #endif