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 56BA7CA0EDC for ; Mon, 11 Sep 2023 22:00:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244202AbjIKV7l (ORCPT ); Mon, 11 Sep 2023 17:59:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239715AbjIKO1D (ORCPT ); Mon, 11 Sep 2023 10:27:03 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8096FF0 for ; Mon, 11 Sep 2023 07:26:59 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C78A5C433C9; Mon, 11 Sep 2023 14:26:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694442419; bh=HqJej2VhvL56kTYtMY2/13/oZlQnzCXVjs2DnoDulW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MHOvM6SErZN3FrrgVyEXTDfe0cqdD+oIZSsxd0iwszR2ws4PcbP9TKoQ1QOoy1FH1 eFrgHAceGsB0Zt4wqVbptvEMeSmWAEdwwkQt4BHGI7nix5pSrVVVgAOO5b+LPNUq0k bCYYfPq0k9VaTK6tgsb5XCxpz9kceU1TvlhrPS8c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicholas Kazlauskas , Jun Lei , Hamza Mahfooz , Daniel Miess , Alex Deucher , Sasha Levin Subject: [PATCH 6.4 002/737] Partially revert "drm/amd/display: Fix possible underflow for displays with large vblank" Date: Mon, 11 Sep 2023 15:37:41 +0200 Message-ID: <20230911134650.366330839@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.286315610@linuxfoundation.org> References: <20230911134650.286315610@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel Miess [ Upstream commit a99a4ff6ef205d125002fc7e0857074e4e6597b6 ] This partially reverts commit de231189e7bf ("drm/amd/display: Fix possible underflow for displays with large vblank"). [Why] The increased value of VBlankNomDefaultUS causes underflow at the desktop of an IP KVM setup [How] Change the value from 800 back to 668 Reviewed-by: Nicholas Kazlauskas Reviewed-by: Jun Lei Acked-by: Hamza Mahfooz Signed-off-by: Daniel Miess Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c index b878effa2129b..b428a343add9c 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c @@ -33,7 +33,7 @@ #include "dml/display_mode_vba.h" struct _vcs_dpi_ip_params_st dcn3_14_ip = { - .VBlankNomDefaultUS = 800, + .VBlankNomDefaultUS = 668, .gpuvm_enable = 1, .gpuvm_max_page_table_levels = 1, .hostvm_enable = 1, -- 2.40.1