From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FEED1D86FF; Tue, 11 Nov 2025 01:23:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762824231; cv=none; b=kZ7+fMOyhAovjbr27ZpKNVEWmfcLgGAd3RDX1vsUYWKi4j/AfwciRq7AGyW4r/Q4lV3lxMIbyH5wfAMOHuKiZvNVZd+hucNJqeivFYBG1B+SgtUCi6gNyBF21XRpJI4hmp8XhCnIxKDL71GDhY20A0uDxq8ieZgQm/havgAKT78= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762824231; c=relaxed/simple; bh=O25uRdn8PHlDkGlnMyQTJ7i97k0Y/wKHUExqjdiUDug=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rnBb92LiMRHyLiP8SN9oKZmqdOKdNapAIsC4Gz0GoWwX+Wp9EAXnnnpZbFuoF0UFqyktc4G+VrL0/t4kvvA/rDr1H+ZMv/SNU3NMb5R/jxY/RUr8510JdPCDB6U3Xs6solKewQYAk0sY7TxadeQ3mnkWlv1pC3vyzucJ45kJg8E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ES5nLR31; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ES5nLR31" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1E4AC4CEF5; Tue, 11 Nov 2025 01:23:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1762824231; bh=O25uRdn8PHlDkGlnMyQTJ7i97k0Y/wKHUExqjdiUDug=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ES5nLR31EuDwGA7dE1cG/W0JVpAgvzEej7tX3hx19avgmV/qYADke3lBy+0TNGZ9J qKEzgLWm48/rl6mIHb3vAx5Fun4A0liwtpvt6X24Sx065A2MRvfX+D/i0yk91LwCl6 SwFHXPwoI/5K+hctE6fGrJV5715ANcFjfZN9lFyg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alvin Lee , Sridevi Arvindekar , Ivan Lipski , Dan Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 6.12 415/565] drm/amd/display: Fix for test crash due to power gating Date: Tue, 11 Nov 2025 09:44:31 +0900 Message-ID: <20251111004536.201533753@linuxfoundation.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251111004526.816196597@linuxfoundation.org> References: <20251111004526.816196597@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sridevi Arvindekar [ Upstream commit 0bf6b216d4783cb51f9af05a49d3cce4fc22dc24 ] [Why/How] Call power gating routine only if it is defined. Reviewed-by: Alvin Lee Signed-off-by: Sridevi Arvindekar Signed-off-by: Ivan Lipski Tested-by: Dan Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c index 55f067c9e4948..8a1ba78c27f97 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c @@ -3086,7 +3086,8 @@ void dcn20_fpga_init_hw(struct dc *dc) res_pool->dccg->funcs->dccg_init(res_pool->dccg); //Enable ability to power gate / don't force power on permanently - hws->funcs.enable_power_gating_plane(hws, true); + if (hws->funcs.enable_power_gating_plane) + hws->funcs.enable_power_gating_plane(hws, true); // Specific to FPGA dccg and registers REG_WRITE(RBBMIF_TIMEOUT_DIS, 0xFFFFFFFF); -- 2.51.0