1 files changed, 26 insertions, 25 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c
index 7e93a45948f7..5abd7f5ad2db 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c
@@ -31,7 +31,6 @@
 #include "vmwgfx_bo.h"
 #include "vmwgfx_drv.h"
 #include "vmwgfx_kms.h"
-#include "vmwgfx_vkms.h"
 
 #include "vmw_surface_cache.h"
 
@@ -76,7 +75,7 @@ done:
 	return ret;
 }
 
-static int
+static void
 compute_crc(struct drm_crtc *crtc,
 	    struct vmw_surface *surf,
 	    u32 *crc)
@@ -102,8 +101,6 @@ compute_crc(struct drm_crtc *crtc,
 	}
 
 	vmw_bo_unmap(bo);
-
-	return 0;
 }
 
 static void
@@ -117,7 +114,6 @@ crc_generate_worker(struct work_struct *work)
 	u64 frame_start, frame_end;
 	u32 crc32 = 0;
 	struct vmw_surface *surf = 0;
-	int ret;
 
 	spin_lock_irq(&du->vkms.crc_state_lock);
 	crc_pending = du->vkms.crc_pending;
@@ -131,22 +127,24 @@ crc_generate_worker(struct work_struct *work)
 		return;
 
 	spin_lock_irq(&du->vkms.crc_state_lock);
-	surf = du->vkms.surface;
+	surf = vmw_surface_reference(du->vkms.surface);
 	spin_unlock_irq(&du->vkms.crc_state_lock);
 
-	if (vmw_surface_sync(vmw, surf)) {
-		drm_warn(crtc->dev, "CRC worker wasn't able to sync the crc surface!\n");
-		return;
-	}
+	if (surf) {
+		if (vmw_surface_sync(vmw, surf)) {
+			drm_warn(
+				crtc->dev,
+				"CRC worker wasn't able to sync the crc surface!\n");
+			return;
+		}
 
-	ret = compute_crc(crtc, surf, &crc32);
-	if (ret)
-		return;
+		compute_crc(crtc, surf, &crc32);
+		vmw_surface_unreference(&surf);
+	}
 
 	spin_lock_irq(&du->vkms.crc_state_lock);
 	frame_start = du->vkms.frame_start;
 	frame_end = du->vkms.frame_end;
-	crc_pending = du->vkms.crc_pending;
 	du->vkms.frame_start = 0;
 	du->vkms.frame_end = 0;
 	du->vkms.crc_pending = false;
@@ -165,7 +163,7 @@ vmw_vkms_vblank_simulate(struct hrtimer *timer)
 	struct vmw_display_unit *du = container_of(timer, struct vmw_display_unit, vkms.timer);
 	struct drm_crtc *crtc = &du->crtc;
 	struct vmw_private *vmw = vmw_priv(crtc->dev);
-	struct vmw_surface *surf = NULL;
+	bool has_surface = false;
 	u64 ret_overrun;
 	bool locked, ret;
 
@@ -180,10 +178,10 @@ vmw_vkms_vblank_simulate(struct hrtimer *timer)
 	WARN_ON(!ret);
 	if (!locked)
 		return HRTIMER_RESTART;
-	surf = du->vkms.surface;
+	has_surface = du->vkms.surface != NULL;
 	vmw_vkms_unlock(crtc);
 
-	if (du->vkms.crc_enabled && surf) {
+	if (du->vkms.crc_enabled && has_surface) {
 		u64 frame = drm_crtc_accurate_vblank_count(crtc);
 
 		spin_lock(&du->vkms.crc_state_lock);
@@ -249,9 +247,8 @@ vmw_vkms_get_vblank_timestamp(struct drm_crtc *crtc,
 {
 	struct drm_device *dev = crtc->dev;
 	struct vmw_private *vmw = vmw_priv(dev);
-	unsigned int pipe = crtc->index;
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
-	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
+	struct drm_vblank_crtc *vblank = drm_crtc_vblank_crtc(crtc);
 
 	if (!vmw->vkms_enabled)
 		return false;
@@ -283,8 +280,7 @@ vmw_vkms_enable_vblank(struct drm_crtc *crtc)
 {
 	struct drm_device *dev = crtc->dev;
 	struct vmw_private *vmw = vmw_priv(dev);
-	unsigned int pipe = drm_crtc_index(crtc);
-	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
+	struct drm_vblank_crtc *vblank = drm_crtc_vblank_crtc(crtc);
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 
 	if (!vmw->vkms_enabled)
@@ -292,8 +288,8 @@ vmw_vkms_enable_vblank(struct drm_crtc *crtc)
 
 	drm_calc_timestamping_constants(crtc, &crtc->mode);
 
-	hrtimer_init(&du->vkms.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	du->vkms.timer.function = &vmw_vkms_vblank_simulate;
+	hrtimer_setup(&du->vkms.timer, &vmw_vkms_vblank_simulate, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 	du->vkms.period_ns = ktime_set(0, vblank->framedur_ns);
 	hrtimer_start(&du->vkms.timer, du->vkms.period_ns, HRTIMER_MODE_REL);
 
@@ -337,6 +333,8 @@ vmw_vkms_crtc_cleanup(struct drm_crtc *crtc)
 {
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 
+	if (du->vkms.surface)
+		vmw_surface_unreference(&du->vkms.surface);
 	WARN_ON(work_pending(&du->vkms.crc_generator_work));
 	hrtimer_cancel(&du->vkms.timer);
 }
@@ -498,9 +496,12 @@ vmw_vkms_set_crc_surface(struct drm_crtc *crtc,
 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 	struct vmw_private *vmw = vmw_priv(crtc->dev);
 
-	if (vmw->vkms_enabled) {
+	if (vmw->vkms_enabled && du->vkms.surface != surf) {
 		WARN_ON(atomic_read(&du->vkms.atomic_lock) != VMW_VKMS_LOCK_MODESET);
-		du->vkms.surface = surf;
+		if (du->vkms.surface)
+			vmw_surface_unreference(&du->vkms.surface);
+		if (surf)
+			du->vkms.surface = vmw_surface_reference(surf);
 	}
 }