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 79D99C46CA3 for ; Mon, 11 Dec 2023 13:56:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344084AbjLKNz7 (ORCPT ); Mon, 11 Dec 2023 08:55:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234969AbjLKNzR (ORCPT ); Mon, 11 Dec 2023 08:55:17 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5514E2D61 for ; Mon, 11 Dec 2023 05:53:51 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E77BBC433C8; Mon, 11 Dec 2023 13:53:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702302830; bh=DW1V/g88A9QOnUh/NV26TJ2ZJH9JcE1sx0eUYfQ5GlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QE2w0QYgghCvC+lv4bGWo3FXq2WLRgpy3bTKJ6pGGftfrcHSYENHgA8cJrKr0j0W9 DKRkUjiCpMnQebxLBnSQpcoH7zNDTkBKlutv9+pDv8NJzpmcA5MNy10HinbAf37GSi xvwTqGPnPph1rjyuLYVTf5uURb/uVo0+k9TGvhEIFjBtO8JyDO5h2YNxQMHFZHPLPj CraQgw51d9aDtbcyP4KCxGxZ15PA8/NShgBGxd0uwYDSxIIpAhnp6pHJciiu8NqEA8 zma2o5Y8UnSZG19tmP6IbHVo1ECCIkvDL4UZuLlp+2AJ1FeVO7dAs2nLImUX5Vjci6 W2fztR5tuAZjg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lijo Lazar , Hawking Zhang , Alex Deucher , Sasha Levin , christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, le.ma@amd.com, James.Zhu@amd.com, shane.xiao@amd.com, sonny.jiang@amd.com, Likun.Gao@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.6 40/47] drm/amdgpu: Add NULL checks for function pointers Date: Mon, 11 Dec 2023 08:50:41 -0500 Message-ID: <20231211135147.380223-40-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211135147.380223-1-sashal@kernel.org> References: <20231211135147.380223-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.5 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lijo Lazar [ Upstream commit 81577503efb49f4ad76af22f9941d72900ef4aab ] Check if function is implemented before making the call. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/soc15.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index f5be40d7ba367..e9c42186a6a25 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -1416,9 +1416,11 @@ static void soc15_common_get_clockgating_state(void *handle, u64 *flags) if (amdgpu_sriov_vf(adev)) *flags = 0; - adev->nbio.funcs->get_clockgating_state(adev, flags); + if (adev->nbio.funcs && adev->nbio.funcs->get_clockgating_state) + adev->nbio.funcs->get_clockgating_state(adev, flags); - adev->hdp.funcs->get_clock_gating_state(adev, flags); + if (adev->hdp.funcs && adev->hdp.funcs->get_clock_gating_state) + adev->hdp.funcs->get_clock_gating_state(adev, flags); if (adev->ip_versions[MP0_HWIP][0] != IP_VERSION(13, 0, 2)) { @@ -1434,9 +1436,11 @@ static void soc15_common_get_clockgating_state(void *handle, u64 *flags) } /* AMD_CG_SUPPORT_ROM_MGCG */ - adev->smuio.funcs->get_clock_gating_state(adev, flags); + if (adev->smuio.funcs && adev->smuio.funcs->get_clock_gating_state) + adev->smuio.funcs->get_clock_gating_state(adev, flags); - adev->df.funcs->get_clockgating_state(adev, flags); + if (adev->df.funcs && adev->df.funcs->get_clockgating_state) + adev->df.funcs->get_clockgating_state(adev, flags); } static int soc15_common_set_powergating_state(void *handle, -- 2.42.0