From patchwork Mon Mar 6 15:59:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 659550 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 E0ADBC77B6C for ; Mon, 6 Mar 2023 16:01:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229595AbjCFQA4 (ORCPT ); Mon, 6 Mar 2023 11:00:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230400AbjCFQAf (ORCPT ); Mon, 6 Mar 2023 11:00:35 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E08342E0D3; Mon, 6 Mar 2023 08:00:34 -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 9462F1FE05; Mon, 6 Mar 2023 16:00:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678118433; 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=FxTnA/4g2gQ8QoHWKF4602AiCImq3uJcQGAx0xAZhD0=; b=R1JJfkm/Po0LNM1CAqRrM/YR42o67MYbo5KaZKOGJfLcTEyLBZ9ZsaP7wsOhttSMjHMGYp 20bx9U5hifW5XESEpB9lAN8xFuPNFIkwKuAFbmm8H5OfZmbj30JcqLLpRxfhtYVUDTjyHh f6d0E+pRl6FtacyKvH7UGcim1QXyQWs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678118433; 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=FxTnA/4g2gQ8QoHWKF4602AiCImq3uJcQGAx0xAZhD0=; b=ZH/y6rh99TWEiPVSauQR7+ZZYGNj4Hb9vv9syDGW1/KxBZrdHZuv5l2oWN2YvtL9VhImrN 1xHXKFEjthqY+QAQ== 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 429C013A6A; Mon, 6 Mar 2023 16:00:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id WOd+DyEOBmQ/PwAAMHmgww (envelope-from ); Mon, 06 Mar 2023 16:00:33 +0000 From: Thomas Zimmermann To: deller@gmx.de, paulus@samba.org, benh@kernel.crashing.org, linux@armlinux.org.uk, pjones@redhat.com, timur@kernel.org, adaplas@gmail.com, s.hauer@pengutronix.de, shawnguo@kernel.org, mbroemme@libmpq.org, thomas@winischhofer.net, James.Bottomley@HansenPartnership.com, spock@gentoo.org, sudipm.mukherjee@gmail.com, teddy.wang@siliconmotion.com, geert+renesas@glider.be, corbet@lwn.net Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 25/99] fbdev/gbefb: Parse option string with struct option_iter Date: Mon, 6 Mar 2023 16:59:02 +0100 Message-Id: <20230306160016.4459-26-tzimmermann@suse.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230306160016.4459-1-tzimmermann@suse.de> References: <20230306160016.4459-1-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/gbefb.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/video/fbdev/gbefb.c b/drivers/video/fbdev/gbefb.c index 5330aa6029ca..36651bb6006d 100644 --- a/drivers/video/fbdev/gbefb.c +++ b/drivers/video/fbdev/gbefb.c @@ -9,6 +9,7 @@ * more details. */ +#include #include #include #include @@ -1083,14 +1084,14 @@ ATTRIBUTE_GROUPS(gbefb); * Initialization */ -static int gbefb_setup(char *options, struct device *dev) +static int gbefb_setup(const char *options, struct device *dev) { - char *this_opt; + struct option_iter iter; + const 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, "monitor:", 8)) { if (!strncmp(this_opt + 8, "crt", 3)) { flat_panel_enabled = 0; @@ -1103,7 +1104,7 @@ static int gbefb_setup(char *options, struct device *dev) default_mode = &default_mode_LCD; } } else if (!strncmp(this_opt, "mem:", 4)) { - gbe_mem_size = memparse(this_opt + 4, &this_opt); + gbe_mem_size = memparse(this_opt + 4, NULL); if (gbe_mem_size > CONFIG_FB_GBE_MEM * 1024 * 1024) gbe_mem_size = CONFIG_FB_GBE_MEM * 1024 * 1024; if (gbe_mem_size < TILE_SIZE) @@ -1112,6 +1113,9 @@ static int gbefb_setup(char *options, struct device *dev) mode_option = devm_kstrdup(dev, this_opt, GFP_KERNEL); } } + + option_iter_release(&iter); + return 0; }