[Intel-gfx] [PATCH] drm/i915: Disable GPU resets for 915g (earliest gen3 desktop)

[Chris Wilson]

Quoting Chris Wilson (2017-07-24 11:14:13)
> The CI farm reports that trying to write to the PCI config (GDRST: 0xc0)
> results in an immediate and silent reboot on Grantsdale (i915g). Until
> that is resolved, stop killing the machine!
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101852
> Fixes: 59ea90543f57 ("drm/i915: Implement GPU reset for 915/945")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.co

Fwiw, I've booted into an i915gm (i.e. Almador and not Grantsdale), and
reset works there. It may be that the bug is specific to 915g, or it may
be the bug is display configuration dependent, etc. But at the moment,
this issue seems limited to CI's 915g desktop.
-Chris