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drm/i915/skl: tell the user about pre-production hardware 

We just removed the implementation for all the pre-production
workarounds, so now tell the user that we expect his machine to not
work properly. Also convert this to DRM_ERROR so we can more easily
spot these problems in bug reports and CI/QA runs.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474891672-23414-2-git-send-email-jani.nikula@intel.com
This commit is contained in:
Paulo Zanoni 2016-09-26 15:07:52 +03:00 committed by Jani Nikula
parent 4ff40a4152
commit 4fc7e845f3
1 changed files with 14 additions and 7 deletions
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21
drivers/gpu/drm/i915/i915_drv.c
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@ -771,6 +771,19 @@ static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
destroy_workqueue(dev_priv->wq);
}
/*
* We don't keep the workarounds for pre-production hardware, so we expect our
* driver to fail on these machines in one way or another. A little warning on
* dmesg may help both the user and the bug triagers.
*/
static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv)
{
if (IS_HSW_EARLY_SDV(dev_priv) ||
IS_SKL_REVID(dev_priv, 0, SKL_REVID_F0))
DRM_ERROR("This is a pre-production stepping. "
"It may not be fully functional.\n");
}
/**
* i915_driver_init_early - setup state not requiring device access
* @dev_priv: device private
@ -838,13 +851,7 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv,
intel_device_info_dump(dev_priv);
/* Not all pre-production machines fall into this category, only the
* very first ones. Almost everything should work, except for maybe
* suspend/resume. And we don't implement workarounds that affect only
* pre-production machines. */
if (IS_HSW_EARLY_SDV(dev_priv))
DRM_INFO("This is an early pre-production Haswell machine. "
"It may not be fully functional.\n");
intel_detect_preproduction_hw(dev_priv);
return 0;