This breaks under the vblank timestamp cleanup patch by Daniel Vetter. Also it is pointless to return anything but zero (or any other constant) if the function doesn't actually query a hw vblank counter. The bogus return of the current drm vblank counter via direct readout or via drm_vblank_count() is found in many of the new kms drivers, but it does exactly nothing different from returning any arbitrary constant - it's a no operation.
Let's simply return 0 - Easy and fast.
Signed-off-by: Mario Kleiner mario.kleiner.de@gmail.com Cc: Dave Airlie airlied@redhat.com --- drivers/gpu/drm/qxl/qxl_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c index 1d9b80c..577dc45 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.c +++ b/drivers/gpu/drm/qxl/qxl_drv.c @@ -198,7 +198,7 @@ static int qxl_pm_restore(struct device *dev)
static u32 qxl_noop_get_vblank_counter(struct drm_device *dev, int crtc) { - return dev->vblank[crtc].count.counter; + return 0; }
static int qxl_noop_enable_vblank(struct drm_device *dev, int crtc)