[Bug 108546] Loading i915 kernel module breaks NVMe PCI device on the new Coffee Lake box

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108546

--- Comment #16 from Takashi Iwai <tiwai at suse.de> ---
BTW, another workaround for this issue is to enforce LSPCON:

--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -2120,6 +2120,7 @@ intel_bios_is_lspcon_present(struct drm_i915_private
*dev_priv,
        if (!HAS_LSPCON(dev_priv))
                return false;

+       return true;
        for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
                child = dev_priv->vbt.child_dev + i;


Then the NVMe and AER errors are gone, plus, even the dead DP becomes working!

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