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drm/i915: Trim error mask to known engines

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For the convenience of userspace passing in an arbitrary reset mask,
remove unknown engines from the set of engines that are to be reset.
This means that we always follow a per-engine reset with a full-device
reset when userspace writes -1 into debugfs/i915_wedged.

Reported-by: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180316215001.12391-1-chris@chris-wilson.co.uk
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
This commit is contained in:
Chris Wilson 2018-03-16 21:49:59 +00:00
parent 46b863325c
commit 873d66fb9b
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/i915/i915_irq.c
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@ -2985,6 +2985,7 @@ void i915_handle_error(struct drm_i915_private *dev_priv,
*/
intel_runtime_pm_get(dev_priv);
engine_mask &= INTEL_INFO(dev_priv)->ring_mask;
i915_capture_error_state(dev_priv, engine_mask, error_msg);
i915_clear_error_registers(dev_priv);