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drm/i915/mst: Continue state updates even if AUX writes fail. 

We are too late in the enabling sequence to back out cleanly, not updating
state tracking variables, like intel_dp->active_mst_links in this
instance, results in incorrect behaviour further along.

v2: Fixed int v/s bool comparison

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107281
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Tested-by: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180718171943.3246-2-dhinakaran.pandiyan@intel.com
This commit is contained in:
Dhinakaran Pandiyan 2018-07-18 10:19:43 -07:00
parent 45ef40aab7
commit 65172699a8
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/drm/i915/intel_dp_mst.c
View File

@ -241,11 +241,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
connector->port,
pipe_config->pbn,
pipe_config->dp_m_n.tu);
if (ret == false) {
if (!ret)
DRM_ERROR("failed to allocate vcpi\n");
return;
}
intel_dp->active_mst_links++;
temp = I915_READ(DP_TP_STATUS(port));