From 378974f7f9754acfd5630327917c6b813495f1a9 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 4 May 2020 05:48:42 +0100 Subject: [PATCH] drm/i915: Allow some leniency in PCU reads Extend the timeout for pcode reads to 20ms 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 Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20200504044903.7626-1-chris@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); -- 2.11.0