From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 12 Mar 2019 20:58:36 +0000 (+0200)
Subject: drm/i915: Accept alloc_size == blocks
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=3cf963cfe3a9fc83bc235b1892858164b1b83306;p=openwrt%2Fstaging%2Fblogic.git

drm/i915: Accept alloc_size == blocks

If the minimum required ddb space for all the planes equals the
total ddb space available we are allowed to use the relevant
watermark level.

Cc: Neel Desai <neel.desai@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190312205844.6339-2-ville.syrjala@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
---

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d73b13ca57a0..07351ceb567b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4378,7 +4378,7 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
 			blocks += wm->uv_wm[level].min_ddb_alloc;
 		}
 
-		if (blocks < alloc_size) {
+		if (blocks <= alloc_size) {
 			alloc_size -= blocks;
 			break;
 		}