diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_fb.c')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_fb.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index 41c422fee31a..c4a552637c93 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -144,14 +144,17 @@ static void qxl_dirty_update(struct qxl_fbdev *qfbdev, spin_lock_irqsave(&qfbdev->dirty.lock, flags); - if (qfbdev->dirty.y1 < y) - y = qfbdev->dirty.y1; - if (qfbdev->dirty.y2 > y2) - y2 = qfbdev->dirty.y2; - if (qfbdev->dirty.x1 < x) - x = qfbdev->dirty.x1; - if (qfbdev->dirty.x2 > x2) - x2 = qfbdev->dirty.x2; + if ((qfbdev->dirty.y2 - qfbdev->dirty.y1) && + (qfbdev->dirty.x2 - qfbdev->dirty.x1)) { + if (qfbdev->dirty.y1 < y) + y = qfbdev->dirty.y1; + if (qfbdev->dirty.y2 > y2) + y2 = qfbdev->dirty.y2; + if (qfbdev->dirty.x1 < x) + x = qfbdev->dirty.x1; + if (qfbdev->dirty.x2 > x2) + x2 = qfbdev->dirty.x2; + } qfbdev->dirty.x1 = x; qfbdev->dirty.x2 = x2; |