[PATCH 13/15] vmwgfx: Add a get_vblank_counter function

[Thomas Hellstrom <thellstrom@vmware.com>]

Avoids an oops during drm_irq_uninstall.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |    1 +
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h |    2 ++
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c |    5 +++++
 3 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index b819535..bd6ff3e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -877,6 +877,7 @@ static struct drm_driver driver = {
 	.irq_postinstall = vmw_irq_postinstall,
 	.irq_uninstall = vmw_irq_uninstall,
 	.irq_handler = vmw_irq_handler,
+	.get_vblank_counter = vmw_get_vblank_counter,
 	.reclaim_buffers_locked = NULL,
 	.ioctls = vmw_ioctls,
 	.num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls),
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index f65e19f..5e9d61f 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -525,6 +525,8 @@ void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 				uint32_t pitch,
 				uint32_t height);
+u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc);
+
 
 /**
  * Overlay control - vmwgfx_overlay.c
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 3ee2492..5fb68f3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1139,3 +1139,8 @@ bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 {
 	return ((u64) pitch * (u64) height) < (u64) dev_priv->vram_size;
 }
+
+u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
+{
+	return 0;
+}
-- 
1.6.2.5