From patchwork Mon Mar 6 15:58:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 659562 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 A8B04C64EC4 for ; Mon, 6 Mar 2023 16:00:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230101AbjCFQAj (ORCPT ); Mon, 6 Mar 2023 11:00:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230361AbjCFQAc (ORCPT ); Mon, 6 Mar 2023 11:00:32 -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 173D72E813; Mon, 6 Mar 2023 08:00:31 -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 4E8131FDF6; Mon, 6 Mar 2023 16:00:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678118429; 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=Uk7crcnOtaYz5lnPu5nHcEno5CdLWKHT+UBXQhxUl8A=; b=GZXdKU6aEL7CBeCsklgVkmVkIEMmxg5dvY4rPpZZXFYp5mNWFe6RiZvl5BDYpi9UN0DtI5 qIpUhIkwDwylSmmVcPaCadPGfdUOkn6ll8RQNrWmsRbDF7PD9OcGXq9lrwoh5b9/9ROyIa rtiCyUhaVcaIId6N1XHJOnubTk2Uzfs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678118429; 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=Uk7crcnOtaYz5lnPu5nHcEno5CdLWKHT+UBXQhxUl8A=; b=Mc7IPHSQBqfzl2cZHYrUjQsreYZzMHsizsnW9xXH+s5PvhaOf8ELhUtJec5g5JKlJ0vnXg 7t9+6B2a9vT14HBg== 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 EB6DA13513; Mon, 6 Mar 2023 16:00:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id uB6MOBwOBmQ/PwAAMHmgww (envelope-from ); Mon, 06 Mar 2023 16:00:28 +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 13/99] fbdev/au1100fb: Parse option string with struct option_iter Date: Mon, 6 Mar 2023 16:58:50 +0100 Message-Id: <20230306160016.4459-14-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/au1100fb.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c index 519313b8bb00..17dae92ac53f 100644 --- a/drivers/video/fbdev/au1100fb.c +++ b/drivers/video/fbdev/au1100fb.c @@ -42,6 +42,7 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include +#include #include #include #include @@ -365,7 +366,9 @@ static const struct fb_ops au1100fb_ops = static int au1100fb_setup(struct au1100fb_device *fbdev) { - char *this_opt, *options; + char *options; + struct option_iter iter; + const char *this_opt; int num_panels = ARRAY_SIZE(known_lcd_panels); if (num_panels <= 0) { @@ -375,10 +378,10 @@ static int au1100fb_setup(struct au1100fb_device *fbdev) if (fb_get_options(DRIVER_NAME, &options)) return -ENODEV; - if (!options) - return -ENODEV; - while ((this_opt = strsep(&options, ",")) != NULL) { + option_iter_init(&iter, options); + + while (option_iter_next(&iter, this_opt)) { /* Panel option */ if (!strncmp(this_opt, "panel:", 6)) { int i; @@ -401,6 +404,8 @@ static int au1100fb_setup(struct au1100fb_device *fbdev) print_warn("Unsupported option \"%s\"", this_opt); } + option_iter_release(&iter); + print_info("Panel=%s", fbdev->panel->name); return 0;