drm_vblank_get() can return an error, which we should propagate.

Signed-off-by: Alexandre Courbot acourbot@nvidia.com --- drivers/gpu/drm/tegra/dc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 6553fd238685..b08df07cad47 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -699,6 +699,7 @@ static int tegra_dc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, { struct tegra_dc *dc = to_tegra_dc(crtc); struct drm_device *drm = crtc->dev; + int ret;

if (dc->event) return -EBUSY; @@ -706,7 +707,9 @@ static int tegra_dc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, if (event) { event->pipe = dc->pipe; dc->event = event; - drm_vblank_get(drm, dc->pipe); + ret = drm_vblank_get(drm, dc->pipe); + if (ret < 0) + return ret; }

tegra_dc_set_base(dc, 0, 0, fb);