File 0060-drm-tilcdc-Fix-scheduling-while-atomic-from-irq-hand.patch of Package kernel-adaptation-bbb-v3.12

From 4bc7f30030d2b775dc873bf23aa81bd3ff23be36 Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <panto@antoniou-consulting.com>
Date: Mon, 3 Jun 2013 17:57:18 +0300
Subject: [PATCH 60/96] drm: tilcdc: Fix scheduling while atomic from irq
 handler.

Fix the crash by not making pm_runtime calls while in the irq.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
---
 drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index d36efc1..fec32a6 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -67,7 +67,6 @@ static void set_scanout(struct drm_crtc *crtc, int n)
 	struct drm_device *dev = crtc->dev;
 	struct tilcdc_drm_private *priv = dev->dev_private;
 
-	pm_runtime_get_sync(dev->dev);
 	tilcdc_write(dev, base_reg[n], tilcdc_crtc->start);
 	tilcdc_write(dev, ceil_reg[n], tilcdc_crtc->end);
 	if (tilcdc_crtc->scanout[n]) {
@@ -77,7 +76,6 @@ static void set_scanout(struct drm_crtc *crtc, int n)
 	tilcdc_crtc->scanout[n] = crtc->fb;
 	drm_framebuffer_reference(tilcdc_crtc->scanout[n]);
 	tilcdc_crtc->dirty &= ~stat[n];
-	pm_runtime_put_sync(dev->dev);
 }
 
 static void update_scanout(struct drm_crtc *crtc)
@@ -161,7 +159,9 @@ static int tilcdc_crtc_page_flip(struct drm_crtc *crtc,
 
 	crtc->fb = fb;
 	tilcdc_crtc->event = event;
+	pm_runtime_get_sync(dev->dev);
 	update_scanout(crtc);
+	pm_runtime_put_sync(dev->dev);
 
 	return 0;
 }
@@ -404,7 +404,11 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
 static int tilcdc_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 		struct drm_framebuffer *old_fb)
 {
+	struct drm_device *dev = crtc->dev;
+
+	pm_runtime_get_sync(dev->dev);
 	update_scanout(crtc);
+	pm_runtime_put_sync(dev->dev);
 	return 0;
 }
 
-- 
1.9.1