[Intel-gfx] [PATCH] drm/i915: Allow some leniency in PCU reads

[Chris Wilson]

Extend the timeout for pcode reads to 10ms as they should not be
performed along critical paths, and succeeding after a short delay is
better than failing entirely.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/1800
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_sideband.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 14daf6af6854..d5129c1dd452 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -429,7 +429,7 @@ int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox,
 
 	mutex_lock(&i915->sb_lock);
 	err = __sandybridge_pcode_rw(i915, mbox, val, val1,
-				     500, 0,
+				     500, 20,
 				     true);
 	mutex_unlock(&i915->sb_lock);
 
-- 
2.20.1