From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933713Ab3B0BDy (ORCPT ); Tue, 26 Feb 2013 20:03:54 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:41965 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760082Ab3BZX5s (ORCPT ); Tue, 26 Feb 2013 18:57:48 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alex Deucher , Adam Jackson , Paulo Zanoni , Dave Airlie Subject: [ 072/150] drm: dont add inferred modes for monitors that dont support them Date: Tue, 26 Feb 2013 15:55:29 -0800 Message-Id: <20130226235531.663384042@linuxfoundation.org> X-Mailer: git-send-email 1.8.1.rc1.5.g7e0651a In-Reply-To: <20130226235523.930663721@linuxfoundation.org> References: <20130226235523.930663721@linuxfoundation.org> User-Agent: quilt/0.60-2.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paulo Zanoni commit 196e077dc165a307efbd9e7569f81bbdbcf18f65 upstream. If bit 0 of the features byte (0x18) is set to 0, then, according to the EDID spec, "the display is non-continuous frequency (multi-mode) and is only specified to accept the video timing formats that are listed in Base EDID and certain Extension Blocks". For more information, please see the EDID spec, check the notes of the table that explains the "Feature Support" byte (18h) and also the notes on the tables of the section that explains "Display Range Limits & Additional Timing Description Definition (tag #FDh)". Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45729 Reviewed-by: Alex Deucher Reviewed-by: Adam Jackson Signed-off-by: Paulo Zanoni Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_edid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2020,7 +2020,8 @@ int drm_add_edid_modes(struct drm_connec num_modes += add_cvt_modes(connector, edid); num_modes += add_standard_modes(connector, edid); num_modes += add_established_modes(connector, edid); - num_modes += add_inferred_modes(connector, edid); + if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF) + num_modes += add_inferred_modes(connector, edid); num_modes += add_cea_modes(connector, edid); if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))