[PATCH 20/20] drm/xe/display: move device_remove over to drmm

[Matthew Auld]

i915 display calls this when releasing the drm_device, match this also
in xe by using drmm. intel_display_device_remove() is freeing purely
software state for the drm_device.

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Andrzej Hajda <andrzej.hajda at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/xe/display/xe_display.c | 20 ++++++++++++++++----
 drivers/gpu/drm/xe/display/xe_display.h |  4 ++--
 drivers/gpu/drm/xe/xe_pci.c             |  4 +++-
 3 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 734bddbb8932..ac674a08664d 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -234,8 +234,6 @@ void xe_display_driver_remove(struct xe_device *xe)
 		return;
 
 	intel_display_driver_remove(xe);
-
-	intel_display_device_remove(xe);
 }
 
 /* IRQ-related functions */
@@ -377,17 +375,31 @@ void xe_display_pm_resume(struct xe_device *xe)
 	intel_power_domains_enable(xe);
 }
 
-void xe_display_probe(struct xe_device *xe)
+static void display_device_remove(struct drm_device *dev, void *arg)
+{
+	struct xe_device *xe = arg;
+
+	intel_display_device_remove(xe);
+}
+
+int xe_display_probe(struct xe_device *xe)
 {
+	int err;
+
 	if (!xe->info.enable_display)
 		goto no_display;
 
 	intel_display_device_probe(xe);
 
+	err = drmm_add_action_or_reset(&xe->drm, display_device_remove, xe);
+	if (err)
+		return err;
+
 	if (has_display(xe))
-		return;
+		return 0;
 
 no_display:
 	xe->info.enable_display = false;
 	unset_display_features(xe);
+	return 0;
 }
diff --git a/drivers/gpu/drm/xe/display/xe_display.h b/drivers/gpu/drm/xe/display/xe_display.h
index 710e56180b52..148bf7d744e6 100644
--- a/drivers/gpu/drm/xe/display/xe_display.h
+++ b/drivers/gpu/drm/xe/display/xe_display.h
@@ -18,7 +18,7 @@ void xe_display_driver_remove(struct xe_device *xe);
 
 int xe_display_create(struct xe_device *xe);
 
-void xe_display_probe(struct xe_device *xe);
+int xe_display_probe(struct xe_device *xe);
 
 int xe_display_init_nommio(struct xe_device *xe);
 int xe_display_init_noirq(struct xe_device *xe);
@@ -47,7 +47,7 @@ static inline void xe_display_driver_remove(struct xe_device *xe) {}
 
 static inline int xe_display_create(struct xe_device *xe) { return 0; }
 
-static inline void xe_display_probe(struct xe_device *xe) { }
+static inline int xe_display_probe(struct xe_device *xe) { }
 
 static inline int xe_display_init_nommio(struct xe_device *xe) { return 0; }
 static inline int xe_display_init_noirq(struct xe_device *xe) { return 0; }
diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c
index 841b02ac6ba1..b366cbceb476 100644
--- a/drivers/gpu/drm/xe/xe_pci.c
+++ b/drivers/gpu/drm/xe/xe_pci.c
@@ -768,7 +768,9 @@ static int xe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (err)
 		return err;
 
-	xe_display_probe(xe);
+	err = xe_display_probe(xe);
+	if (err)
+		return err;
 
 	drm_dbg(&xe->drm, "%s %s %04x:%04x dgfx:%d gfx:%s (%d.%02d) media:%s (%d.%02d) display:%s dma_m_s:%d tc:%d gscfi:%d",
 		desc->platform_name,
-- 
2.45.0