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drm/amd/display: Fix 64-bit division

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Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland
2017-02-06 11:23:20 -05:00
committed by Alex Deucher
parent 71f7256e41
commit ca709397b5
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/display/dc/dce/dce_abm.c
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@@ -94,7 +94,7 @@ static unsigned int get_current_backlight(struct dce_abm *abm_dce)
if (bl_period == 0)
bl_period = 0xFFFF;
current_backlight /= bl_period;
current_backlight = div_u64(current_backlight, bl_period);
current_backlight = (current_backlight + 1) >> 1;
current_backlight = (uint64_t)(current_backlight) * bl_period;