From 2a492bcb4da50d091caf36334c2114c480581440 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 24 Feb 2020 14:08:28 +0200
Subject: drm/i915: split intel_modeset_init() to pre/post irq install
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Git-commit: 80f286a552c6cc554199a7d14b76836cffabd451
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

Split inte_modeset_init() to parts before and after irq install, to
facilitate further cleanup. The error paths are a mess, otherwise no
functional changes.

Cc: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200224120828.22105-1-jani.nikula@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/i915/display/intel_display.c | 17 +++++++++++++----
 drivers/gpu/drm/i915/display/intel_display.h |  1 +
 drivers/gpu/drm/i915/i915_drv.c              |  6 ++++++
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3031e64ee518..b79d5e2e3c12 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -17785,11 +17785,9 @@ static void plane_config_fini(struct intel_initial_plane_config *plane_config)
 		i915_vma_put(plane_config->vma);
 }
 
-int intel_modeset_init(struct drm_i915_private *i915)
+/* part #1: call before irq install */
+int intel_modeset_init_noirq(struct drm_i915_private *i915)
 {
-	struct drm_device *dev = &i915->drm;
-	enum pipe pipe;
-	struct intel_crtc *crtc;
 	int ret;
 
 	i915->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0);
@@ -17814,6 +17812,17 @@ int intel_modeset_init(struct drm_i915_private *i915)
 
 	intel_fbc_init(i915);
 
+	return 0;
+}
+
+/* part #2: call after irq install */
+int intel_modeset_init(struct drm_i915_private *i915)
+{
+	struct drm_device *dev = &i915->drm;
+	enum pipe pipe;
+	struct intel_crtc *crtc;
+	int ret;
+
 	intel_init_pm(i915);
 
 	intel_panel_sanitize_ssc(i915);
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index f92efbbec838..8f994244ccc7 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -614,6 +614,7 @@ intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
 
 /* modesetting */
 void intel_modeset_init_hw(struct drm_i915_private *i915);
+int intel_modeset_init_noirq(struct drm_i915_private *i915);
 int intel_modeset_init(struct drm_i915_private *i915);
 void intel_modeset_driver_remove(struct drm_i915_private *i915);
 void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915);
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 259b15642c17..6adf1dad1e20 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -238,8 +238,14 @@ static int i915_driver_modeset_probe_noirq(struct drm_i915_private *i915)
 
 	intel_csr_ucode_init(i915);
 
+	ret = intel_modeset_init_noirq(i915);
+	if (ret)
+		goto cleanup_vga_client;
+
 	return 0;
 
+cleanup_vga_client:
+	intel_vga_unregister(i915);
 out:
 	return ret;
 }
-- 
2.28.0