diff options
| author |   Gerd Hoffmann <kraxel@redhat.com> | 2015-10-05 12:20:26 +0200 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2015-10-07 15:31:45 +1000 |
| commit | 60906529bec506a4bde93f04eb5e7a9dd9c42a3b (patch) | |
| tree | e30c4cb1602ad283d807a2c00c1ebd695ea1076f /drivers/gpu/drm/qxl | |
| parent | Merge tag 'for-linus-4.3b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip (diff) | |
| download | linux-dev-60906529bec506a4bde93f04eb5e7a9dd9c42a3b.tar.xz linux-dev-60906529bec506a4bde93f04eb5e7a9dd9c42a3b.zip | |
drm/qxl: fix framebuffer dirty rectangle tracking.
Commit "c0fe07a drm/qxl: rewrite framebuffer support" has a bug in the
dirty rectangle tracking: Instead of ignoring an empty dirty rectangle
when adding a new dirty region the dirty region gets extended to the
upper left corner. Fix it.
Cc: linux-stable@vger.kernel.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/qxl')
| -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; |