diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index de27439636e..19bd7212f4a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1285,11 +1285,14 @@ static bool vlv_compute_drain_latency(struct drm_crtc *crtc, if (WARN(pixel_size == 0, "Pixel size is zero!\n")) return false; - entries = (clock / 1000) * pixel_size; + entries = DIV_ROUND_UP(clock, 1000) * pixel_size; *prec_mult = (entries > 128) ? DRAIN_LATENCY_PRECISION_64 : DRAIN_LATENCY_PRECISION_32; *drain_latency = (64 * (*prec_mult) * 4) / entries; + if (*drain_latency > DRAIN_LATENCY_MASK) + *drain_latency = DRAIN_LATENCY_MASK; + return true; } |