Re: [PATCH] drm/i915/guc/slpc: Check GuC status before freq boost

2021-11-12 Thread Dixit, Ashutosh
On Thu, 11 Nov 2021 23:10:16 -0800, Vinay Belgaumkar wrote: > > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c > b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c > index 4e1d3cd29164..22c1c12369f2 100644 > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c > +++ b/drivers/gpu/drm/i915/gt/uc/

[PATCH] drm/i915/guc/slpc: Check GuC status before freq boost

2021-11-11 Thread Vinay Belgaumkar
It's possible that i915 might get wedged between a boost and un-boost. Validate the i915-GuC connection before trying to send a H2G to change the min frequency. Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/4464 Cc: Ashutosh Dixit Signed-off-by: Vinay Belgaumkar --- drivers/gpu/drm/i9