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-rw-r--r--drivers/gpu/drm/i915/display/intel_psr.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 8f2b8b4620bd..7ee03bf924c4 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1250,6 +1250,9 @@ static bool wake_lines_fit_into_vblank(struct intel_dp *intel_dp,
crtc_state->hw.adjusted_mode.crtc_vblank_start;
int wake_lines = psr2_block_count_lines(intel_dp);
+ if (crtc_state->req_psr2_sdp_prior_scanline)
+ vblank -= 1;
+
/* Vblank >= PSR2_CTL Block Count Number maximum line count */
if (vblank < wake_lines)
return false;