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 52BA31170E for ; Mon, 11 Sep 2023 14:26:59 +0000 (UTC) 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 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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