From 1ad87e72b54cf3b698c002f0a31ac34d6b407f0b Mon Sep 17 00:00:00 2001
From: Guillaume Clement <gclement@baobob.org>
Date: Sat, 10 Aug 2013 21:57:57 +0200
Subject: [PATCH] i915: Fix SDVO potentially turning off randomly
Some Poulsbo cards seem to incorrectly report
SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED instead of
SDVO_CMD_STATUS_PENDING, which causes the display to be turned off.
This could also happen to i915.
Signed-off-by: Guillaume Clement <gclement@baobob.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_sdvo.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 02f220b4e4a1..317e058fb3cf 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -538,7 +538,8 @@ static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo,
&status))
goto log_fail;
- while (status == SDVO_CMD_STATUS_PENDING && --retry) {
+ while ((status == SDVO_CMD_STATUS_PENDING ||
+ status == SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED) && --retry) {
if (retry < 10)
msleep(15);
else
--
2.34.1