950-0536-drm-v3d-Update-to-upstream-IRQ-code.patch

From 50088003d803f04e536eb09ac2635df35b5c8ae4 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 12 Mar 2019 09:08:10 -0700
Subject: [PATCH] drm/v3d: Update to upstream IRQ code.

---
 drivers/gpu/drm/v3d/v3d_irq.c | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

--- a/drivers/gpu/drm/v3d/v3d_irq.c
+++ b/drivers/gpu/drm/v3d/v3d_irq.c
@@ -168,7 +168,7 @@ v3d_hub_irq(int irq, void *arg)
 int
 v3d_irq_init(struct v3d_dev *v3d)
 {
-	int ret, core;
+	int irq1, ret, core;
 
 	INIT_WORK(&v3d->overflow_mem_work, v3d_overflow_mem_work);
 
@@ -179,24 +179,29 @@ v3d_irq_init(struct v3d_dev *v3d)
 		V3D_CORE_WRITE(core, V3D_CTL_INT_CLR, V3D_CORE_IRQS);
 	V3D_WRITE(V3D_HUB_INT_CLR, V3D_HUB_IRQS);
 
-	if (platform_get_irq(v3d->pdev, 1) < 0) {
-		ret = devm_request_irq(v3d->dev, platform_get_irq(v3d->pdev, 0),
+	irq1 = platform_get_irq(v3d->pdev, 1);
+	if (irq1 == -EPROBE_DEFER)
+		return irq1;
+	if (irq1 > 0) {
+		ret = devm_request_irq(v3d->dev, irq1,
 				       v3d_irq, IRQF_SHARED,
-				       "v3d", v3d);
-		v3d->single_irq_line = true;
-	} else {
+				       "v3d_core0", v3d);
+		if (ret)
+			goto fail;
 		ret = devm_request_irq(v3d->dev, platform_get_irq(v3d->pdev, 0),
 				       v3d_hub_irq, IRQF_SHARED,
 				       "v3d_hub", v3d);
 		if (ret)
 			goto fail;
+	} else {
+		v3d->single_irq_line = true;
 
-		ret = devm_request_irq(v3d->dev, platform_get_irq(v3d->pdev, 1),
+		ret = devm_request_irq(v3d->dev, platform_get_irq(v3d->pdev, 0),
 				       v3d_irq, IRQF_SHARED,
-				       "v3d_core0", v3d);
+				       "v3d", v3d);
+		if (ret)
+			goto fail;
 	}
-	if (ret)
-		goto fail;
 
 	v3d_irq_enable(v3d);
 	return 0;