13 files changed, 35 insertions, 12 deletions

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 0862fa4b746d..04d4b4ca0ef3 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -3129,7 +3129,6 @@ static int r100_startup(struct radeon_device *rdev)
                         return r;
         }
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r100_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 430fc2a984b2..6be3acdc9e7d 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -1205,7 +1205,6 @@ static int r300_startup(struct radeon_device *rdev)
                         return r;
         }
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r100_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index e7c34776a013..885610f8dd85 100644
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -186,7 +186,6 @@ static int r420_startup(struct radeon_device *rdev)
         }
         r420_pipes_init(rdev);
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r100_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/r520.c b/drivers/gpu/drm/radeon/r520.c
index 26c37792c8fe..92fbc982b889 100644
--- a/drivers/gpu/drm/radeon/r520.c
+++ b/drivers/gpu/drm/radeon/r520.c
@@ -185,7 +185,6 @@ static int r520_startup(struct radeon_device *rdev)
                         return r;
         }
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         rs600_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 5067ab7fdced..5966027aa967 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1571,7 +1571,6 @@ int r600_startup(struct radeon_device *rdev)
         }
 
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r = r600_irq_init(rdev);
         if (r) {
                 DRM_ERROR("radeon: IH init failed (%d).\n", r);
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 0b8dad604ad8..bdad153953e6 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -352,11 +352,14 @@ struct radeon_irq {
         bool            sw_int;
         /* FIXME: use a define max crtc rather than hardcode it */
         bool            crtc_vblank_int[2];
+        spinlock_t sw_lock;
+        int sw_refcount;
 };
 
 int radeon_irq_kms_init(struct radeon_device *rdev);
 void radeon_irq_kms_fini(struct radeon_device *rdev);
-
+void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev);
+void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev);
 
 /*
  * CP & ring.
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index ab2a8b16836c..2ac31633d72c 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -193,14 +193,18 @@ retry:
         }
 
         if (intr) {
+                radeon_irq_kms_sw_irq_get(rdev);
                 r = wait_event_interruptible_timeout(rdev->fence_drv.queue,
                                 radeon_fence_signaled(fence), timeout);
+                radeon_irq_kms_sw_irq_put(rdev);
                 if (unlikely(r == -ERESTARTSYS)) {
                         return -EBUSY;
                 }
         } else {
+                radeon_irq_kms_sw_irq_get(rdev);
                 r = wait_event_timeout(rdev->fence_drv.queue,
                          radeon_fence_signaled(fence), timeout);
+                radeon_irq_kms_sw_irq_put(rdev);
         }
         if (unlikely(!radeon_fence_signaled(fence))) {
                 if (unlikely(r == 0)) {
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 84f8a6fb0da3..26789970c5cf 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -87,7 +87,7 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
 
         if (rdev->flags & RADEON_SINGLE_CRTC)
                 num_crtc = 1;
-
+        spin_lock_init(&rdev->irq.sw_lock);
         r = drm_vblank_init(rdev->ddev, num_crtc);
         if (r) {
                 return r;
@@ -122,3 +122,29 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
                         pci_disable_msi(rdev->pdev);
         }
 }
+
+void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)
+{
+        unsigned long irqflags;
+
+        spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
+        if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) {
+                rdev->irq.sw_int = true;
+                radeon_irq_set(rdev);
+        }
+        spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
+}
+
+void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
+{
+        unsigned long irqflags;
+
+        spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
+        BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0);
+        if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) {
+                rdev->irq.sw_int = false;
+                radeon_irq_set(rdev);
+        }
+        spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
+}
+
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 2e5b9450a804..50907f84461b 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -394,7 +394,6 @@ static int rs400_startup(struct radeon_device *rdev)
         if (r)
                 return r;
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r100_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index d2dac45173c2..9b6303dd7d3a 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -388,7 +388,6 @@ static int rs600_startup(struct radeon_device *rdev)
         if (r)
                 return r;
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         rs600_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 7ffd6db1223f..4607025125c0 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -605,7 +605,6 @@ static int rs690_startup(struct radeon_device *rdev)
         if (r)
                 return r;
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         rs600_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 93de4a9807ab..0ecf5d939aa0 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -478,7 +478,6 @@ static int rv515_startup(struct radeon_device *rdev)
                         return r;
         }
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         rs600_irq_set(rdev);
         /* 1M ring buffer */
         r = r100_cp_init(rdev, 1024 * 1024);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 479684bda7e2..a96be8b3a530 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -888,7 +888,6 @@ static int rv770_startup(struct radeon_device *rdev)
         }
 
         /* Enable IRQ */
-        rdev->irq.sw_int = true;
         r = r600_irq_init(rdev);
         if (r) {
                 DRM_ERROR("radeon: IH init failed (%d).\n", r);