From mboxrd@z Thu Jan 1 00:00:00 1970 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 F25EAC433EF for ; Wed, 9 Mar 2022 16:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236456AbiCIQfb (ORCPT ); Wed, 9 Mar 2022 11:35:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236584AbiCIQaD (ORCPT ); Wed, 9 Mar 2022 11:30:03 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A01D5B0A42; Wed, 9 Mar 2022 08:23:19 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 485F1B81EE7; Wed, 9 Mar 2022 16:23:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 876D1C36AE3; Wed, 9 Mar 2022 16:23:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646842995; bh=74fUNjecR8fdqL28kcqYW3B5dHuRd/wXLz1YjF6Q8wE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QSgeuGQjd3yJSpiHmgyoApfBNOzIxOm9i6kBXgWJvxDhw7EF7CTicGTzYuKFaTePQ 5DKqV4rza+yPFgMdPibnQ1oqebJd4gczxOw9w9q2LXDCHhWZKy9abpDO0rJk2kp3Ke +6pNJS9Jb9oiqVq5Bk1ugJPSlIrPItxsejCso/IRpslUdfQq1vFKA1tSyE6DsIeAKs CzvWe+DXbEs4L4a55z4FMHyVNrxYmv2J30WkBIwJcfWOrcOcXG3ZFrLf7MPTeQpfkJ vSeDqJ80MyNLCGMEPjRLKdhm/pbq0ecSc4RYq1M7MGt8o8FYShPXkI2tWa8RURwG30 VQZwxHe5ic1rA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Manasi Navare , Jani Nikula , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , dri-devel@lists.freedesktop.org, Sasha Levin , maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@linux.ie, daniel@ffwll.ch Subject: [PATCH AUTOSEL 5.10 15/20] drm/vrr: Set VRR capable prop only if it is attached to connector Date: Wed, 9 Mar 2022 11:21:53 -0500 Message-Id: <20220309162158.136467-15-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220309162158.136467-1-sashal@kernel.org> References: <20220309162158.136467-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Manasi Navare [ Upstream commit 62929726ef0ec72cbbe9440c5d125d4278b99894 ] VRR capable property is not attached by default to the connector It is attached only if VRR is supported. So if the driver tries to call drm core set prop function without it being attached that causes NULL dereference. Cc: Jani Nikula Cc: Ville Syrjälä Cc: dri-devel@lists.freedesktop.org Signed-off-by: Manasi Navare Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220225013055.9282-1-manasi.d.navare@intel.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_connector.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 717c4e7271b0..5163433ac561 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -2155,6 +2155,9 @@ EXPORT_SYMBOL(drm_connector_attach_max_bpc_property); void drm_connector_set_vrr_capable_property( struct drm_connector *connector, bool capable) { + if (!connector->vrr_capable_property) + return; + drm_object_property_set_value(&connector->base, connector->vrr_capable_property, capable); -- 2.34.1