Attachment 35742 Details for Bug 28164 – possible fix

[patch] possible fix

0001-drm-radeon-kms-reset-ddc_bus-in-object-header-parsi.patch (text/plain), 1.40 KB, created by Alex Deucher on 2010-05-18 14:53:36 UTC

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Creator: Alex Deucher

Created: 2010-05-18 14:53:36 UTC

Size: 1.40 KB

patch

obsolete

>From 08b9b9e5c6a3f2ccf1a5e257c21c6c77b2911b8d Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexdeucher@gmail.com>
>Date: Tue, 18 May 2010 17:51:15 -0400
>Subject: [PATCH] drm/radeon/kms: reset ddc_bus in object header parsing
>
>Some LVDS connectors don't have a ddc bus, so reset the
>ddc bus to invalid before parsing the next connector
>to avoid using stale ddc bus data.  Should fix
>fdo bug 28164.
>
>Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
>Cc: stable@kernel.org
>---
> drivers/gpu/drm/radeon/radeon_atombios.c |    5 ++---
> 1 files changed, 2 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
>index 9149e4a..c2c10e2 100644
>--- a/drivers/gpu/drm/radeon/radeon_atombios.c
>+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
>@@ -530,6 +530,8 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
> 			}
> 
> 			/* look up gpio for ddc, hpd */
>+			ddc_bus.valid = false;
>+			hpd.hpd = RADEON_HPD_NONE;
> 			if ((le16_to_cpu(path->usDeviceTag) &
> 			     (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT)) == 0) {
> 				for (j = 0; j < con_obj->ucNumberOfObjects; j++) {
>@@ -585,9 +587,6 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
> 						break;
> 					}
> 				}
>-			} else {
>-				hpd.hpd = RADEON_HPD_NONE;
>-				ddc_bus.valid = false;
> 			}
> 
> 			/* needed for aux chan transactions */
>-- 
>1.5.6.3
>

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