drm/i915/gt: remove i915->gt0 in favour of i915->gt[0]

Since gt0 == i915->gt[0], just drop the former.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5319364f4c9416fed218382d020a57c5b0a17bee.1696236329.git.jani.nikula@intel.com

drivers/gpu/drm/i915/gt/intel_gt.c

@@ -68,7 +68,7 @@ int intel_root_gt_init_early(struct drm_i915_private *i915)
 	if (!gt)
 		return -ENOMEM;
 
-	i915->gt0 = gt;
+	i915->gt[0] = gt;
 
 	gt->i915 = i915;
 	gt->uncore = &i915->uncore;
@@ -917,8 +917,6 @@ int intel_gt_probe_all(struct drm_i915_private *i915)
 	if (ret)
 		return ret;
 
-	i915->gt[0] = gt;
-
 	if (!HAS_EXTRA_GT_LIST(i915))
 		return 0;
 

drivers/gpu/drm/i915/i915_drv.h

@@ -317,12 +317,6 @@ struct drm_i915_private {
 
 	struct i915_hwmon *hwmon;
 
-	/* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
-	struct intel_gt *gt0;
-
-	/*
-	 * i915->gt[0] == i915->gt0
-	 */
 	struct intel_gt *gt[I915_MAX_GT];
 
 	struct kobject *sysfs_gt;
@@ -384,7 +378,7 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
 
 static inline struct intel_gt *to_gt(const struct drm_i915_private *i915)
 {
-	return i915->gt0;
+	return i915->gt[0];
 }
 
 /* Simple iterator over all initialised engines */

drivers/gpu/drm/i915/selftests/mock_gem_device.c

@@ -114,7 +114,6 @@ static struct dev_pm_domain pm_domain = {
 
 static void mock_gt_probe(struct drm_i915_private *i915)
 {
-	i915->gt[0] = to_gt(i915);
 	i915->gt[0]->name = "Mock GT";
 }