From patchwork Thu Mar 9 16:01:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 661256 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 93BA1C7618D for ; Thu, 9 Mar 2023 16:04:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231835AbjCIQDy (ORCPT ); Thu, 9 Mar 2023 11:03:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231666AbjCIQC0 (ORCPT ); Thu, 9 Mar 2023 11:02:26 -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 576F4F7EEF; Thu, 9 Mar 2023 08:02:25 -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 B475222159; Thu, 9 Mar 2023 16:02:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377743; 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=A4w8kD6lS+dFzIR63p5dUUwf4D44kkwhnZ/hkW7PWvQ=; b=iDXxHErhFvLptDDcHlghTmcBvSp1EOtHjXWV9z7c4sMdO0MmTcmFUZba4t8Tgko6jidwvf 7izSf1/V7pekx7B33M3cKNXsdppS5eHTOtSB4LGfgDAlC9AX6713Pv7Ulilr/lwLYry5Cq tppXhFt4Jdw44vRZnVJ2W2Nn0TvWcoc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377743; 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=A4w8kD6lS+dFzIR63p5dUUwf4D44kkwhnZ/hkW7PWvQ=; b=x0I9OXLcL+NnyqJYs6yQHXgnjh0C8YZXabB8ASmWG/y2Fyeu7R+tvqHtbYVpxQWyZaBOwF Zx/7CPvfEv66pBBA== 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 5C3BA13A73; Thu, 9 Mar 2023 16:02:23 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id GB6gFQ8DCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:23 +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 047/101] fbdev/mx3fb: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:01:07 +0100 Message-Id: <20230309160201.5163-48-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/mx3fb.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/video/fbdev/mx3fb.c b/drivers/video/fbdev/mx3fb.c index e33ad125318f..ca58afe366b4 100644 --- a/drivers/video/fbdev/mx3fb.c +++ b/drivers/video/fbdev/mx3fb.c @@ -6,6 +6,7 @@ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. */ +#include #include #include #include @@ -1654,17 +1655,16 @@ static struct platform_driver mx3fb_driver = { static int __init mx3fb_setup(void) { #ifndef MODULE - char *opt, *options = NULL; + char *options = NULL; + struct option_iter iter; + char *opt; if (fb_get_options("mx3fb", &options)) return -ENODEV; - 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, "bpp=", 4)) default_bpp = simple_strtoul(opt + 4, NULL, 0); else { @@ -1673,6 +1673,8 @@ static int __init mx3fb_setup(void) fb_mode = fb_mode_buf; } } + + option_iter_release(&iter); #endif return 0;