drm/vmwgfx: Get rid of the device-private suspended member

It was used to early block fbdev dirty processing. Replace it with an
unprotected check of the par->dirty.active field. While this might
race with the vmw_fb_off() function, we do a protected check later so
the race will at worst lead to grabbing and releasing a couple of locks.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index c66f32a..61a03ac 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1449,7 +1449,6 @@ static int vmw_pm_freeze(struct device *kdev)
                DRM_ERROR("Failed to freeze modesetting.\n");
                return ret;
        }
-       dev_priv->suspended = true;
        if (dev_priv->enable_fb)
                vmw_fb_off(dev_priv);
 
@@ -1471,7 +1470,6 @@ static int vmw_pm_freeze(struct device *kdev)
                        vmw_kms_resume(dev);
                if (dev_priv->enable_fb)
                        vmw_fb_on(dev_priv);
-               dev_priv->suspended = false;
                vmw_fb_refresh(dev_priv);
                return -EBUSY;
        }
@@ -1512,7 +1510,6 @@ static int vmw_pm_restore(struct device *kdev)
        if (dev_priv->enable_fb)
                vmw_fb_on(dev_priv);
 
-       dev_priv->suspended = false;
        vmw_fb_refresh(dev_priv);
 
        return 0;

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 0bf28a6..fb2f327 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -497,7 +497,6 @@ struct vmw_private {
        struct vmw_master *active_master;
        struct vmw_master fbdev_master;
        struct notifier_block pm_nb;
-       bool suspended;
        bool refuse_hibernation;
        bool suspend_locked;
 

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
index e85c186..be40cff 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -187,7 +187,7 @@ static void vmw_fb_dirty_flush(struct work_struct *work)
        struct vmw_dma_buffer *vbo = par->vmw_bo;
        void *virtual;
 
-       if (vmw_priv->suspended)
+       if (!READ_ONCE(par->dirty.active))
                return;
 
        mutex_lock(&par->bo_mutex);