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drm/i915: set num_fence_regs to 0 if there is no aperture 

We can't fence anything without aperture.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029095856.25431-3-matthew.auld@intel.com
This commit is contained in:
Daniele Ceraolo Spurio 2019-10-29 09:58:52 +00:00 committed by Chris Wilson
parent 54b512cd7a
commit cd20c70bb0
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/i915_gem_fence_reg.c
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@ -846,8 +846,10 @@ void i915_ggtt_init_fences(struct i915_ggtt *ggtt)
detect_bit_6_swizzle(ggtt);
if (INTEL_GEN(i915) >= 7 &&
!(IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)))
if (!i915_ggtt_has_aperture(ggtt))
num_fences = 0;
else if (INTEL_GEN(i915) >= 7 &&
!(IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)))
num_fences = 32;
else if (INTEL_GEN(i915) >= 4 ||
IS_I945G(i915) || IS_I945GM(i915) ||