This function returns an int, but when ilk_validate_pipe_wm fails it
returns false, which is 0 (success). As a result invalid watermarks
are applied, while they should have been rejected.
Fix this by returning -EINVAL.
Fixes: ed4a6a7ca853 ("drm/i915: Add two-stage ILK-style watermark programming
(v11)")
Cc: Matt Roper <[email protected]>
Signed-off-by: Maarten Lankhorst <[email protected]>
---
drivers/gpu/drm/i915/intel_pm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index aebb4c37bc39..61dcac9dea37 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2345,7 +2345,7 @@ static int ilk_compute_pipe_wm(struct intel_crtc
*intel_crtc,
pipe_wm->linetime = hsw_compute_linetime_wm(dev, cstate);
if (!ilk_validate_pipe_wm(dev, pipe_wm))
- return false;
+ return -EINVAL;
ilk_compute_wm_reg_maximums(dev, 1, &max);
--
2.1.0
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