drm/i915: taint kernel when force probing unsupported devices

From Jani Nikula
dcd289136bccf2bdd519ee1eb355ed71c73cbe75 in linux-6.1.y/6.1.30
79c901c93562bdf1c84ce6c1b744fbbe4389a6eb in mainline linux

diff --git a/sys/dev/pci/drm/i915/i915_pci.c b/sys/dev/pci/drm/i915/i915_pci.c
index ef72617..7869032 100644 (file)
--- a/sys/dev/pci/drm/i915/i915_pci.c
+++ b/sys/dev/pci/drm/i915/i915_pci.c
@@ -1344,6 +1344,12 @@ static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                return -ENODEV;
        }
 
+       if (intel_info->require_force_probe) {
+               dev_info(&pdev->dev, "Force probing unsupported Device ID %04x, tainting kernel\n",
+                        pdev->device);
+               add_taint(TAINT_USER, LOCKDEP_STILL_OK);
+       }
+
        /* Only bind to function 0 of the device. Early generations
         * used function 1 as a placeholder for multi-head. This causes
         * us confusion instead, especially on the systems where both