From nobody Sat Feb 7 11:30:56 2026 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 4B063C001DF for ; Mon, 24 Jul 2023 12:18:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230496AbjGXMSk (ORCPT ); Mon, 24 Jul 2023 08:18:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230422AbjGXMSc (ORCPT ); Mon, 24 Jul 2023 08:18:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F3EF1BC2 for ; Mon, 24 Jul 2023 05:17:56 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AF86D61137 for ; Mon, 24 Jul 2023 12:17:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B6F9C433C9; Mon, 24 Jul 2023 12:17:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690201075; bh=6Wv579trwS5Cciu3iVXhCndFsSYSuaaRiNeiqPnZ2h4=; h=From:To:Cc:Subject:Date:From; b=k2iu8GNEY+ZXAxiDKfFIUekNEw7/Ij2qXiSCU9PxBQ+dd63AZop4EVo0iqP04CkXP Q9MM57FzoPiLkhFMdI1qy2ePfLLbvVY9m8va8a+lmERmOVOw2EZNn+12U3al4IgTPC cM6NfVD0pqnfj/NqZko1NIAOlO/SEbkn+vPxAHfXPX/qel5ArKxKAHldxyiaOsAb5R 5hcopEk0F7keqchPOsjOeOnV21Ie+R6yDmOl2Fn6qqYg3joNtNrY/bOo+JgI1IPRyB Plv6HHp16HgWwJ6uP34btPY01z5mmYd5Q79vZp9EokbP5vtdkd4CN+bSMznfwtju7+ FXeC8sfVsm2Qw== From: Arnd Bergmann To: Neil Armstrong , David Airlie , Daniel Vetter , Sam Ravnborg , Paul Cercueil Cc: Arnd Bergmann , Linus Walleij , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/panel: ld9040: add backlight Kconfig dependency Date: Mon, 24 Jul 2023 14:17:05 +0200 Message-Id: <20230724121736.1293270-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Arnd Bergmann The driver now uses the backlight interface, which breaks when that is disabled: ld.lld: error: undefined symbol: devm_backlight_device_register Enforce the necessary Kconfig dependency to avoid this. Fixes: c2268daa65fb4 ("drm/panel: ld9040: Register a backlight device") Signed-off-by: Arnd Bergmann Reviewed-by: Sam Ravnborg --- drivers/gpu/drm/panel/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index e8c9f4613a4b4..b097b2507ac5b 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -300,6 +300,7 @@ config DRM_PANEL_LEADTEK_LTK500HD1829 config DRM_PANEL_SAMSUNG_LD9040 tristate "Samsung LD9040 RGB/SPI panel" depends on OF && SPI + depends on BACKLIGHT_CLASS_DEVICE select VIDEOMODE_HELPERS =20 config DRM_PANEL_LG_LB035Q02 --=20 2.39.2