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authorImre Deak <imre.deak@intel.com>2014-01-16 18:35:57 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-01-22 10:34:39 +0100
commit5d6a1116c6475404e6505b708320f9579ae19acd (patch)
tree059b3c0164583b5b5f765303acc9a5fb113c492c /drivers/gpu/drm/i915/intel_dp.c
parentdc5a43636c2fd50c694f16d042e0639fff5044fd (diff)
downloadlinaro-lsk-5d6a1116c6475404e6505b708320f9579ae19acd.tar.gz
drm/i915: don't disable the DP port if the link is lost
Currently if the DP link is lost (either because of a hot unplug, or failed link status check) we disable the DP port, but leave the rest of the pipe running. This is incompatible with the modeset disabling sequence of some platforms/configurations. At least this is the case for DP ports on the CPU as opposed to PCH. Atm we'll also get a warning when we do a modeset disable after the above link lost event, since we expect the DP port to be enabled at this point (see the bugzilla ticket for the related dmesg). Note that with this patch we'll still end up disabling the port, thanks to the HPD uevent and subsequent modeset disable. See also the next patch fixing the other half of this issue. Solution suggested by Ville. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70570 Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 7df5085973e..7b630e9a011 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2891,13 +2891,11 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
/* Try to read receiver status if the link appears to be up */
if (!intel_dp_get_link_status(intel_dp, link_status)) {
- intel_dp_link_down(intel_dp);
return;
}
/* Now read the DPCD to see if it's actually running */
if (!intel_dp_get_dpcd(intel_dp)) {
- intel_dp_link_down(intel_dp);
return;
}