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 B5E471CA8F; Mon, 1 Apr 2024 16:03:45 +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=1711987425; cv=none; b=eW/9GBcooNjSrLLrT6fA2YkPxpkn2tGNYmfnQHFhVCv7VHJ1WBo1yituL4DD7VYMUyLi/ACtMtURiSwx9TWDcfJwSonT2zfVC5qaYH8OHIbcRbv86UEnoOoux1HACn4YKvApQSE4n2A1JIc9e6zDt8/rVaI2J8A2cPEspt9E0YI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711987425; c=relaxed/simple; bh=zRfFba6z0lKcBriOMch5o8kxuR3w9XCa+cN+gthyLrU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iJebK2AH9CFwJx2VjFKUe01YQb6gIffgDjCVBm3ZLZSn5+rPvhH20vfMwnZgA/LsVm/+jfAcrm8yFlkKgcisQOXeeYKzsg8T4Bnz1y5I8T7ooGQvijqicun0g+9XsNof8AY+9D1AGMa82bC0LhJuui89dUuWgX3CxSt/jUQ/taE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NuMtp5aa; 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="NuMtp5aa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23BCBC43390; Mon, 1 Apr 2024 16:03:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711987425; bh=zRfFba6z0lKcBriOMch5o8kxuR3w9XCa+cN+gthyLrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NuMtp5aaKGgQB5huNMKudc9T+TRVvvw6aH0YPP7/DwK9FVLCkftK0kgBGCeAfe9x4 D0O0AkUiQBcGBUQqGd83quMYekzZ1A33by0ksPYwDvyI9lYKOgrRAb3AdG/b7vzdnM u73FB3bf0HisvEmorYaRPMsOpH87fJalJU8x3gzk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Alex Deucher , Charlene Liu , Wayne Lin , Chris Park , Daniel Wheeler Subject: [PATCH 6.8 283/399] drm/amd/display: Prevent crash when disable stream Date: Mon, 1 Apr 2024 17:44:09 +0200 Message-ID: <20240401152557.630243424@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152549.131030308@linuxfoundation.org> References: <20240401152549.131030308@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chris Park commit 72d72e8fddbcd6c98e1b02d32cf6f2b04e10bd1c upstream. [Why] Disabling stream encoder invokes a function that no longer exists. [How] Check if the function declaration is NULL in disable stream encoder. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Charlene Liu Acked-by: Wayne Lin Signed-off-by: Chris Park Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c @@ -1185,7 +1185,8 @@ void dce110_disable_stream(struct pipe_c if (dccg) { dccg->funcs->disable_symclk32_se(dccg, dp_hpo_inst); dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst, dp_hpo_inst); - dccg->funcs->set_dtbclk_dto(dccg, &dto_params); + if (dccg && dccg->funcs->set_dtbclk_dto) + dccg->funcs->set_dtbclk_dto(dccg, &dto_params); } } else if (dccg && dccg->funcs->disable_symclk_se) { dccg->funcs->disable_symclk_se(dccg, stream_enc->stream_enc_inst,