[PATCH 44/65] drm/i915: Generalize i915_gem_sanitize() to reset contexts

Chris Wilson chris at chris-wilson.co.uk
Fri Jan 19 20:53:17 UTC 2018

While we believe that we need to always reset the GPU to scrub the state
on transition to/from the driver, it is essential when we enable contexts.
Generalize the gen test to be on context-support instead.

References: d2b4b97933f5 ("drm/i915: Record the default hw state after reset upon load"
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
 drivers/gpu/drm/i915/i915_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 8e4bab871979..c0fd3bf77907 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4876,7 +4876,7 @@ void i915_gem_sanitize(struct drm_i915_private *i915)
 	 * it may impact the display and we are uncertain about the stability
 	 * of the reset, so this could be applied to even earlier gen.
-	if (INTEL_GEN(i915) >= 5) {
+	if (i915->engine[RCS]->context_size) {
 		int reset = intel_gpu_reset(i915, ALL_ENGINES);
 		WARN_ON(reset && reset != -ENODEV);

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