From patchwork Thu Mar 9 16:00:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 661272 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 C0DCCC7618B for ; Thu, 9 Mar 2023 16:03:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231789AbjCIQDD (ORCPT ); Thu, 9 Mar 2023 11:03:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231322AbjCIQCM (ORCPT ); Thu, 9 Mar 2023 11:02:12 -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 08299F7ED7; Thu, 9 Mar 2023 08:02:10 -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 73A842017D; Thu, 9 Mar 2023 16:02:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377729; 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=+FUi3cC4ZbNfnVzDlRVuUkJNsL1SkMquCeIFMmvAC8o=; b=IUPQEEYnXT7GyVhVVIVQfYM1bet8PDGuc1h2UDerjes0SxQAn2C/FlvGez6Ic/PqalEUDD 49x+fRHdnUJGSmwspY4kgfcCJcXJGr0qXuD+yvcfq5r4Co+jFz7McSNgO83mkT2+QqbQco clCYFpog5JZXedsiH8jEaZ+BSeBABa8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377729; 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=+FUi3cC4ZbNfnVzDlRVuUkJNsL1SkMquCeIFMmvAC8o=; b=04hFjl3HX3Hs4/ETS8p0/KG+5HcDpCm4C1v6z24G2Oa2NO/APnZuQK90gwFrwfZ40Y+tDF /0HyodwPVhZ2lgDg== 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 13C0C1391B; Thu, 9 Mar 2023 16:02:09 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id MJniAwEDCmQHbgAAMHmgww (envelope-from ); Thu, 09 Mar 2023 16:02:09 +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 012/101] fbdev/aty: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:00:32 +0100 Message-Id: <20230309160201.5163-13-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/aty/aty128fb.c | 12 ++++++++---- drivers/video/fbdev/aty/atyfb_base.c | 12 ++++++++---- drivers/video/fbdev/aty/radeon_base.c | 15 ++++++++------- 3 files changed, 24 insertions(+), 15 deletions(-) diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c index 0e725a6eb40b..ee2be122de2d 100644 --- a/drivers/video/fbdev/aty/aty128fb.c +++ b/drivers/video/fbdev/aty/aty128fb.c @@ -48,6 +48,7 @@ #include +#include #include #include #include @@ -1674,14 +1675,14 @@ static int aty128fb_sync(struct fb_info *info) } #ifndef MODULE -static int aty128fb_setup(char *options) +static int aty128fb_setup(const char *options) { + struct option_iter iter; char *this_opt; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((this_opt = strsep(&options, ",")) != NULL) { + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "lcd:", 4)) { default_lcd_on = simple_strtoul(this_opt+4, NULL, 0); continue; @@ -1730,6 +1731,9 @@ static int aty128fb_setup(char *options) mode_option = mode_option_buf; } } + + option_iter_release(&iter); + return 0; } #endif /* MODULE */ diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c index d83b3dae795b..f4b22d2f0d3d 100644 --- a/drivers/video/fbdev/aty/atyfb_base.c +++ b/drivers/video/fbdev/aty/atyfb_base.c @@ -49,6 +49,7 @@ ******************************************************************************/ #include +#include #include #include #include @@ -3832,14 +3833,14 @@ static struct pci_driver atyfb_driver = { #endif /* CONFIG_PCI */ #ifndef MODULE -static int __init atyfb_setup(char *options) +static int __init atyfb_setup(const char *options) { + struct option_iter iter; char *this_opt; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((this_opt = strsep(&options, ",")) != NULL) { + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "noaccel", 7)) { noaccel = true; } else if (!strncmp(this_opt, "nomtrr", 6)) { @@ -3903,6 +3904,9 @@ static int __init atyfb_setup(char *options) mode = mode_buf; } } + + option_iter_release(&iter); + return 0; } #endif /* MODULE */ diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c index dc2657ae96f2..975323e82f52 100644 --- a/drivers/video/fbdev/aty/radeon_base.c +++ b/drivers/video/fbdev/aty/radeon_base.c @@ -55,6 +55,7 @@ #include "radeonfb.h" #include +#include #include #include #include @@ -2562,17 +2563,14 @@ static struct pci_driver radeonfb_driver = { }; #ifndef MODULE -static int __init radeonfb_setup (char *options) +static int __init radeonfb_setup (const char *options) { + struct option_iter iter; char *this_opt; - if (!options || !*options) - return 0; - - while ((this_opt = strsep (&options, ",")) != NULL) { - if (!*this_opt) - continue; + option_iter_init(&iter, options); + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "noaccel", 7)) { noaccel = 1; } else if (!strncmp(this_opt, "mirror", 6)) { @@ -2603,6 +2601,9 @@ static int __init radeonfb_setup (char *options) mode_option = mode_option_buf; } } + + option_iter_release(&iter); + return 0; } #endif /* MODULE */