From patchwork Thu Mar 9 16:01:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13167889 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 48406C76196 for ; Thu, 9 Mar 2023 16:04:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231872AbjCIQEc (ORCPT ); Thu, 9 Mar 2023 11:04:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231739AbjCIQCg (ORCPT ); Thu, 9 Mar 2023 11:02:36 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83667F6C7A; Thu, 9 Mar 2023 08:02:35 -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-out2.suse.de (Postfix) with ESMTPS id 44B6420179; Thu, 9 Mar 2023 16:02:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377754; 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=k8XeD13siGTPg6ur3jYfV0pIQmZ74GbDCRGpLHT3KYY=; b=usVstNaMvRiiNGybfSZtuWZwo3o9DGS90YmiNS0IerHlu++zx9+fuYsOeVk4z0EgLQTlP8 14EDFUpo8H9GZmISw0ir5bUUpescdqkii0CWQ9VMU9VZvUb4BxdVaAytuOV9oq0xdv0TOG uHSraghKEl2vhKBCAMaVsBA1wC6TXuA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377754; 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=k8XeD13siGTPg6ur3jYfV0pIQmZ74GbDCRGpLHT3KYY=; b=/A7j3hhwjwv8mVq2lH3pzqblM4RD5k5cYFw3kOjsSVifHYNdq7tqboxQQcrw+F+RpFjPDD OeM8vPaucJ9tCuBg== 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 D9D8613A73; Thu, 9 Mar 2023 16:02:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id SMUxNBkDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:33 +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 074/101] fbdev/skeletonfb: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:01:34 +0100 Message-Id: <20230309160201.5163-75-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/skeletonfb.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/skeletonfb.c b/drivers/video/fbdev/skeletonfb.c index 40c130ab6b38..ee6944d0ebc1 100644 --- a/drivers/video/fbdev/skeletonfb.c +++ b/drivers/video/fbdev/skeletonfb.c @@ -43,6 +43,7 @@ */ #include +#include #include #include #include @@ -973,9 +974,19 @@ static struct platform_device *xxxfb_device; * Only necessary if your driver takes special options, * otherwise we fall back on the generic fb_setup(). */ -static int __init xxxfb_setup(char *options) +static int __init xxxfb_setup(const char *options) { - /* Parse user specified options (`video=xxxfb:') */ + /* Parse user-specified options (`video=xxxfb:') */ + + struct option_iter iter; + char *this_opt; + + option_iter_init(&iter, options); + + while (option_iter_next(&iter, &this_opt)) { + } + + option_iter_release(&iter); } #endif /* MODULE */