[PATCH v5 2/3] drm/i915: Fix PXP cleanup missing from probe error rewind

[Janusz Krzysztofik]

Commit f67986b0119c04 ("drm/i915/pxp: Promote pxp subsystem to top-level
of i915") added PXP initialization to driver probe path, but didn't add a
respective PXP cleanup on probe error.  That lack of cleanup seems
harmless as long as PXP is still unused and idle when a probe failure
occurs and error rewind path is entered, but as soon as PXP starts
consuming device and driver resources keeping them busy, kernel warnings
may be triggered when cleaning up resources provided by memory regions,
GGTT, GEM and/or VMA cache from the probe error rewind and/or module
unload paths because of missing PXP cleanup.  That scenario was observed
on attempts to fail the probe and enter the rewind path on injection of
now ignored error in device registration path.

Fix it.

Cc: Alan Previn <alan.previn.teres.alexis at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index e0dde7c0fa9c5..10d1d4f3c11c4 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -845,6 +845,7 @@ int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return 0;
 
 out_cleanup_gem:
+	intel_pxp_fini(i915);
 	i915_gem_suspend(i915);
 	i915_gem_driver_remove(i915);
 	i915_gem_driver_release(i915);
-- 
2.48.1