From: Alexandre Courbot Subject: [PATCH] drm: tegra: Check return value of drm_vblank_get() Date: Thu, 9 Oct 2014 18:16:49 +0900 Message-ID: <1412846209-28630-1-git-send-email-acourbot@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Thierry Reding Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org List-Id: linux-tegra@vger.kernel.org drm_vblank_get() can return an error, which we should propagate. Signed-off-by: Alexandre Courbot --- 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); -- 2.1.2