From patchwork Tue Jun 13 11:06:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13278519 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 8260AC7EE29 for ; Tue, 13 Jun 2023 11:21:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236086AbjFMLVU (ORCPT ); Tue, 13 Jun 2023 07:21:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239624AbjFMLJ7 (ORCPT ); Tue, 13 Jun 2023 07:09:59 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C468710DA; Tue, 13 Jun 2023 04:09:58 -0700 (PDT) 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 44F201FD91; Tue, 13 Jun 2023 11:09:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1686654597; 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=8F8zYOtuNhkeGEJGjTGNJf7JW+gWS4lDFOo66WeTx0E=; b=ECgCmMINGISn/lWQG1aZEQVqxvjvla/Qc2oAMkkd0gA6ktxAzxHJeQc5qj/CU/QJw+tNYg v407xsy2u8ittm9pMqsBSjPx1uE9z0jZGoGH1kC98865iPYqV8F21E6VMgnpZPBhumW3zd pDdk+h/GcnMijj7JSvtK12cleuuph1I= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1686654597; 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=8F8zYOtuNhkeGEJGjTGNJf7JW+gWS4lDFOo66WeTx0E=; b=7nTrivDvMYM/AT6jFbdL/EDQgl+DHpD7Miu3nB5yKE4CbLdpSmyIgMuOeJk5k6CgLXIYn6 uLQpwU7uc1YMxBCA== 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 D638A13A47; Tue, 13 Jun 2023 11:09:56 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id UOVpM4ROiGR8CQAAMHmgww (envelope-from ); Tue, 13 Jun 2023 11:09:56 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, javierm@redhat.com, sam@ravnborg.org, deller@gmx.de, geert+renesas@glider.be, lee@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, dan.carpenter@linaro.org, michael.j.ruhl@intel.com Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sh@vger.kernel.org, linux-omap@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Thomas Zimmermann , Laurent Pinchart , Rich Felker , John Paul Adrian Glaubitz , stable@vger.kernel.org Subject: [PATCH v3 03/38] backlight/gpio_backlight: Compare against struct fb_info.device Date: Tue, 13 Jun 2023 13:06:38 +0200 Message-ID: <20230613110953.24176-4-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230613110953.24176-1-tzimmermann@suse.de> References: <20230613110953.24176-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org Struct gpio_backlight_platform_data refers to a platform device within the Linux device hierarchy. The test in gpio_backlight_check_fb() compares it against the fbdev device in struct fb_info.dev, which is different. Fix the test by comparing to struct fb_info.device. Fixes a bug in the backlight driver and prepares fbdev for making struct fb_info.dev optional. v2: * move renames into separate patch (Javier, Sam, Michael) Signed-off-by: Thomas Zimmermann Fixes: 8b770e3c9824 ("backlight: Add GPIO-based backlight driver") Cc: Laurent Pinchart Cc: Rich Felker Cc: John Paul Adrian Glaubitz Cc: Lee Jones Cc: Daniel Thompson Cc: Jingoo Han Cc: linux-sh@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: # v3.12+ Reviewed-by: Sam Ravnborg Reviewed-by: Daniel Thompson --- drivers/video/backlight/gpio_backlight.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 6f78d928f054a..5c5c99f7979e3 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -35,7 +35,7 @@ static int gpio_backlight_check_fb(struct backlight_device *bl, { struct gpio_backlight *gbl = bl_get_data(bl); - return gbl->fbdev == NULL || gbl->fbdev == info->dev; + return gbl->fbdev == NULL || gbl->fbdev == info->device; } static const struct backlight_ops gpio_backlight_ops = {