It's causing piles of issues since we've stopped forcing full detect
cycles in the sysfs interfaces with
commit c484f02d0f02fbbfc6decc945a69aae011041a27
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Fri Mar 6 12:36:42 2015 +0000
drm: Lighten sysfs connector 'status'
The original justification for this was that the hpd handlers could
use the unknown state as a hint to force a full detection. But current
i915 code isn't doing that any more, and no one else really uses reset
on resume. So instead just keep the old state around.
References:
http://article.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/62584
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100641
Cc: Rui Matos <tiagomatos at gmail.com>
Cc: Julien Wajsberg <felash at gmail.com>
Cc: kuddel.mail at gmx.de
Cc: Lennart Poettering <mzxreary at 0pointer.de>
Cc: stable at vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
drivers/gpu/drm/drm_crtc.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 1f0da41ae2a1..c91c18b2b1d4 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -5273,12 +5273,9 @@ void drm_mode_config_reset(struct drm_device *dev)
if (encoder->funcs->reset)
encoder->funcs->reset(encoder);
- drm_for_each_connector(connector, dev) {
- connector->status = connector_status_unknown;
-
+ drm_for_each_connector(connector, dev)
if (connector->funcs->reset)
connector->funcs->reset(connector);
- }
}
EXPORT_SYMBOL(drm_mode_config_reset);
--
2.1.4
