From patchwork Thu Mar 9 16:01:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13167884 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 8D0E9C76186 for ; Thu, 9 Mar 2023 16:04:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232049AbjCIQEN (ORCPT ); Thu, 9 Mar 2023 11:04:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231683AbjCIQC2 (ORCPT ); Thu, 9 Mar 2023 11:02:28 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02E08F7EC0; Thu, 9 Mar 2023 08:02:28 -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 7C59D2018D; Thu, 9 Mar 2023 16:02:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377746; 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=W/0ZjJnUahwB+uDTmK6gOidiMLdF9SLqHErBxx1LZFA=; b=sde/W8mkq20pfs9Lu23oerLWqFKCK7Ve6Z3emOo1rc8iQ5dtAT5rrBIuQ8EEsScc2Cq1tW etL7jJDPhJju0rI0zknbepYz4yQspUtRn6D6Sgwi+OkpxYOwpV0LPTipZND1bxrvgtK0// 3bblfF5ajVNFkOBL7h8EVvgbEXgD8Qo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377746; 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=W/0ZjJnUahwB+uDTmK6gOidiMLdF9SLqHErBxx1LZFA=; b=k75q3gjqGTjoy7fOj98md7bjeSqPMrPYUc0TVTkEo46OIhA4k8TsIhpdCt1MtBd7R9bguu vB4z8fBtKXQfkRAw== 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 25DD213A73; Thu, 9 Mar 2023 16:02:26 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id cAtPCBIDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:26 +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 054/101] fbdev/omapfb: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:01:14 +0100 Message-Id: <20230309160201.5163-55-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/omap/omapfb_main.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c index 1f3df2055ff0..db5256c71f5b 100644 --- a/drivers/video/fbdev/omap/omapfb_main.c +++ b/drivers/video/fbdev/omap/omapfb_main.c @@ -11,6 +11,7 @@ * Dirk Behme - changes for 2.6 kernel API * Texas Instruments - H3 support */ +#include #include #include #include @@ -1842,17 +1843,17 @@ static struct platform_driver omapfb_driver = { #ifndef MODULE /* Process kernel command line parameters */ -static int __init omapfb_setup(char *options) +static int __init omapfb_setup(const char *options) { - char *this_opt = NULL; + struct option_iter iter; + char *this_opt; int r = 0; pr_debug("omapfb: options %s\n", options); - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while (!r && (this_opt = strsep(&options, ",")) != NULL) { + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "accel", 5)) def_accel = 1; else if (!strncmp(this_opt, "vram:", 5)) { @@ -1893,6 +1894,8 @@ static int __init omapfb_setup(char *options) } } + option_iter_release(&iter); + return r; }