[PATCH 05/10] drm/tegra: Handle 64-bit return from drm_crtc_vblank_count()
Dhinakaran Pandiyan
dhinakaran.pandiyan at intel.com
Fri Feb 2 03:26:45 UTC 2018
570e86963a51 ("drm: Widen vblank count to 64-bits [v3]") changed the
return type for drm_crtc_vblank_count() to u64. This could cause
problems if the return from the function is directly compared against
a 32-bit reference vblank count. Typecast explicitly to make the data type
clear.
Cc: Keith Packard <keithp at keithp.com>
Cc: Thierry Reding <treding at nvidia.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
drivers/gpu/drm/tegra/dc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index b8403ed48285..49df2db2ad46 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1359,7 +1359,7 @@ static u32 tegra_dc_get_vblank_counter(struct drm_crtc *crtc)
return host1x_syncpt_read(dc->syncpt);
/* fallback to software emulated VBLANK counter */
- return drm_crtc_vblank_count(&dc->base);
+ return (u32)drm_crtc_vblank_count(&dc->base);
}
static int tegra_dc_enable_vblank(struct drm_crtc *crtc)
--
2.14.1
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