Commit dda4b8f7 authored by Chris Wilson's avatar Chris Wilson Committed by Joonas Lahtinen

drm/i915: Skip switch-to-kernel-context on suspend when wedged

If the HW is already wedged, attempting to submit a request will
generate an -EIO. If we tried this during suspend, we would abort
whereas all we want to do is to go sleep and throw away the corrupt
state.

Fixes: 5ab57c70 ("drm/i915: Flush logical context image out to memory upon suspend")
Testcase: igt/gem_eio/suspend
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171130102951.14965-1-chris@chris-wilson.co.uk
(cherry picked from commit ecf73eb2)
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
parent ae64f9bd
...@@ -4712,17 +4712,19 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv) ...@@ -4712,17 +4712,19 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv)
* state. Fortunately, the kernel_context is disposable and we do * state. Fortunately, the kernel_context is disposable and we do
* not rely on its state. * not rely on its state.
*/ */
ret = i915_gem_switch_to_kernel_context(dev_priv); if (!i915_terminally_wedged(&dev_priv->gpu_error)) {
if (ret) ret = i915_gem_switch_to_kernel_context(dev_priv);
goto err_unlock; if (ret)
goto err_unlock;
ret = i915_gem_wait_for_idle(dev_priv, ret = i915_gem_wait_for_idle(dev_priv,
I915_WAIT_INTERRUPTIBLE | I915_WAIT_INTERRUPTIBLE |
I915_WAIT_LOCKED); I915_WAIT_LOCKED);
if (ret && ret != -EIO) if (ret && ret != -EIO)
goto err_unlock; goto err_unlock;
assert_kernel_context_is_current(dev_priv); assert_kernel_context_is_current(dev_priv);
}
i915_gem_contexts_lost(dev_priv); i915_gem_contexts_lost(dev_priv);
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
......
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