From patchwork Thu Mar 9 16:00:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13167779 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 7B366C7619A for ; Thu, 9 Mar 2023 16:03:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231808AbjCIQDG (ORCPT ); Thu, 9 Mar 2023 11:03:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231499AbjCIQCM (ORCPT ); Thu, 9 Mar 2023 11:02:12 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C1AFDF4B7A; Thu, 9 Mar 2023 08:02:11 -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 5144920180; Thu, 9 Mar 2023 16:02:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678377730; 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=Xqb9CgIoQGPm/XxyMitPmhdSDaGH79IsOOqR6TG8g1I=; b=CeFZiktdszGYTi/TFyAP/ldlwhwuYupWUIF8tFKc6aafQMfvB68x2fKK6RCTZ2dKq0yJFe PKiygqiGal7n0KWo4eMoRqzqq8uDvuKdTrrsqodbae/SHTXusnmBmasNUmYf5B9gRr/hCa +l7440uanYzdUVQVbOhZzu5inLDIDqo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678377730; 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=Xqb9CgIoQGPm/XxyMitPmhdSDaGH79IsOOqR6TG8g1I=; b=2ZDnOM33w7luTv8IUcn8JfTZUfCM8NDRECPE/CedbN1GUmMeWxZ515kMbjBj1afytoFiPy SarN+ubFAu54ViDw== 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 DCA331391B; 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 aDToNAEDCmQHbgAAMHmgww (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 014/101] fbdev/au1200fb: Parse option string with struct option_iter Date: Thu, 9 Mar 2023 17:00:34 +0100 Message-Id: <20230309160201.5163-15-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/au1200fb.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c index 81c315454428..43b6a9dfeec4 100644 --- a/drivers/video/fbdev/au1200fb.c +++ b/drivers/video/fbdev/au1200fb.c @@ -31,6 +31,7 @@ */ #include +#include #include #include #include @@ -1578,16 +1579,17 @@ static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev) static int au1200fb_setup(struct au1200fb_platdata *pd) { char *options = NULL; - char *this_opt, *endptr; + struct option_iter iter; + char *this_opt; + char *endptr; int num_panels = ARRAY_SIZE(known_lcd_panels); int panel_idx = -1; fb_get_options(DRIVER_NAME, &options); - if (!options) - goto out; + option_iter_init(&iter, options); - while ((this_opt = strsep(&options, ",")) != NULL) { + while (option_iter_next(&iter, &this_opt)) { /* Panel option - can be panel name, * "bs" for board-switch, or number/index */ if (!strncmp(this_opt, "panel:", 6)) { @@ -1636,7 +1638,8 @@ static int au1200fb_setup(struct au1200fb_platdata *pd) print_warn("Unsupported option \"%s\"", this_opt); } -out: + option_iter_release(&iter); + return 0; }