[Intel-gfx] [PATCH 1/2] drm/i915: Sanitycheck MMIO access early in driver load

[Andi Shyti]

Hi Jani,

Thanks for looking into this,

[...]

> > +#define COND (__raw_uncore_read32(uncore, FORCEWAKE_MT) != ~0)
> > +	if (wait_for(COND, 2000) == -ETIMEDOUT) {
> 
> I guess this somewhat reimplements intel_wait_for_register_fw()?

Thanks!

Andi

> > +		drm_err(&i915->drm, "Device is non-operational; MMIO access returns 0xFFFFFFFF!\n");
> > +		return -EIO;
> > +	}