[Intel-gfx] [PATCH] drm/i915/guc: Disable automatic GuC firmware loading

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

New GuC code is logging errors at runtime suspend and resume which
causes CI testing to log "orange" status. Default to not trying to
load the firmware until this is resolved.

Example of the log:

 [drm] RC6 on
 [drm:intel_runtime_suspend] Suspending device
 [drm:host2guc_action [i915]] *ERROR* GUC: host2guc action 0x501 failed. ret=-110 status=0x00000501 response=0x40000000
 ...
 [drm:intel_runtime_resume] Resuming device
 [drm:host2guc_action [i915]] *ERROR* GUC: host2guc action 0x502 failed. ret=-110 status=0x00000502 response=0x40000000
 [drm:intel_runtime_resume] Device resumed

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Dave Gordon <david.s.gordon at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Chris Harris <chris.harris at intel.com>
---
 drivers/gpu/drm/i915/i915_params.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 21a323c01cdb..9a5d58b251f5 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -53,7 +53,7 @@ struct i915_params i915 __read_mostly = {
 	.verbose_state_checks = 1,
 	.nuclear_pageflip = 0,
 	.edp_vswing = 0,
-	.enable_guc_loading = -1,
+	.enable_guc_loading = 0,
 	.enable_guc_submission = 0,
 	.guc_log_level = -1,
 	.enable_dp_mst = true,
@@ -197,7 +197,7 @@ MODULE_PARM_DESC(edp_vswing,
 module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400);
 MODULE_PARM_DESC(enable_guc_loading,
 		"Enable GuC firmware loading "
-		"(-1=auto [default], 0=never, 1=if available, 2=required)");
+		"(-1=auto, 0=never [default], 1=if available, 2=required)");
 
 module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
 MODULE_PARM_DESC(enable_guc_submission,
-- 
1.9.1