From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Due to a misplaced memset(), we never actually enabled the FBC WM on HSW.
Move the memset() to happen a bit earlier, so that it won't clobber
results->enable_fbc_wm.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b0e4a0b..862e350 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2429,6 +2429,8 @@ static void hsw_compute_wm_results(struct drm_device *dev,
break;
max_level = level - 1;
+ memset(results, 0, sizeof(*results));
+
/* The spec says it is preferred to disable FBC WMs instead of disabling
* a WM level. */
results->enable_fbc_wm = true;
@@ -2439,7 +2441,6 @@ static void hsw_compute_wm_results(struct drm_device *dev,
}
}
- memset(results, 0, sizeof(*results));
for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
const struct hsw_lp_wm_result *r;
--
1.8.1.5
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