From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Egbert Eich , Chris Wilson , Daniel Vetter Subject: [ 17/21] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC. Date: Tue, 11 Jun 2013 13:03:11 -0700 Message-Id: <20130611195522.018319688@linuxfoundation.org> In-Reply-To: <20130611195520.003233586@linuxfoundation.org> References: <20130611195520.003233586@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Egbert Eich commit 53d3b4d7778daf15900867336c85d3f8dd70600c upstream. In intel_sdvo_get_lvds_modes() the wrong i2c adapter record is used for DDC. Thus the code will always have to rely on a LVDS panel mode supplied by VBT. In most cases this succeeds, so this didn't get detected for quite a while. This regression seems to have been introduced in commit f899fc64cda8569d0529452aafc0da31c042df2e Author: Chris Wilson Date: Tue Jul 20 15:44:45 2010 -0700 drm/i915: use GMBUS to manage i2c links Signed-off-by: Egbert Eich Reviewed-by: Chris Wilson [danvet: Add note about which commit likely introduced this issue.] Signed-off-by: Daniel Vetter Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/intel_sdvo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1609,7 +1609,7 @@ static void intel_sdvo_get_lvds_modes(st * Assume that the preferred modes are * arranged in priority order. */ - intel_ddc_get_modes(connector, intel_sdvo->i2c); + intel_ddc_get_modes(connector, &intel_sdvo->ddc); if (list_empty(&connector->probed_modes) == false) goto end;