* [PATCH] drm: tegra: Check return value of drm_vblank_get()
@ 2014-10-09 9:16 Alexandre Courbot
0 siblings, 0 replies; only message in thread
From: Alexandre Courbot @ 2014-10-09 9:16 UTC (permalink / raw)
To: Thierry Reding; +Cc: dri-devel, linux-tegra, linux-kernel, Alexandre Courbot
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);
--
2.1.2
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