drm/radeon: update sarea copies of last_ variables on resume.

This fixes a regression reported in bug #12613.

[airlied: not I tweaked the patch slightly and fixed it by etienne did
all the hardwork so gets authorship]

Signed-off-by: etienne <etienne.basset@numericable.fr>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index df4cf97e5d976cb1c5d445dc487b15d2c3333029..92965dbb3c147a7b46c3cf248466765f2d08f5e8 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -557,8 +557,10 @@ static int radeon_do_engine_reset(struct drm_device * dev)
 }
 
 static void radeon_cp_init_ring_buffer(struct drm_device * dev,
-                                      drm_radeon_private_t * dev_priv)
+                                      drm_radeon_private_t *dev_priv,
+                                      struct drm_file *file_priv)
 {
+       struct drm_radeon_master_private *master_priv;
        u32 ring_start, cur_read_ptr;
        u32 tmp;
 
@@ -677,6 +679,14 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
        dev_priv->scratch[2] = 0;
        RADEON_WRITE(RADEON_LAST_CLEAR_REG, 0);
 
+       /* reset sarea copies of these */
+       master_priv = file_priv->master->driver_priv;
+       if (master_priv->sarea_priv) {
+               master_priv->sarea_priv->last_frame = 0;
+               master_priv->sarea_priv->last_dispatch = 0;
+               master_priv->sarea_priv->last_clear = 0;
+       }
+
        radeon_do_wait_for_idle(dev_priv);
 
        /* Sync everything up */
@@ -1215,7 +1225,7 @@ static int radeon_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init,
        }
 
        radeon_cp_load_microcode(dev_priv);
-       radeon_cp_init_ring_buffer(dev, dev_priv);
+       radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
 
        dev_priv->last_buf = 0;
 
@@ -1281,7 +1291,7 @@ static int radeon_do_cleanup_cp(struct drm_device * dev)
  *
  * Charl P. Botha <http://cpbotha.net>
  */
-static int radeon_do_resume_cp(struct drm_device * dev)
+static int radeon_do_resume_cp(struct drm_device *dev, struct drm_file *file_priv)
 {
        drm_radeon_private_t *dev_priv = dev->dev_private;
 
@@ -1304,7 +1314,7 @@ static int radeon_do_resume_cp(struct drm_device * dev)
        }
 
        radeon_cp_load_microcode(dev_priv);
-       radeon_cp_init_ring_buffer(dev, dev_priv);
+       radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
 
        radeon_do_engine_reset(dev);
        radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
@@ -1479,8 +1489,7 @@ int radeon_cp_idle(struct drm_device *dev, void *data, struct drm_file *file_pri
  */
 int radeon_cp_resume(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
-
-       return radeon_do_resume_cp(dev);
+       return radeon_do_resume_cp(dev, file_priv);
 }
 
 int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)