[PATCH] drm/xe/pf: Restore default PF scheduling on failed VF enable

[Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>]

When VF enabling fails, xe_sriov_pf_unprovision_vfs() releases VF
resources but does not restore PF scheduling parameters set by
xe_gt_sriov_pf_config_set_fair_sched(). This leaves the PF with
scheduling parameters (exec_quantum, preempt_timeout) set
even though no VFs are enabled.

Add xe_sriov_pf_reprovision_default() to the failure path, mirroring
what pf_disable_vfs() already does on the normal disable path.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/issues/8126
Fixes: afc480ff55c5 ("drm/xe/pf: Perform fair scheduling auto-provisioning")
Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
---
 drivers/gpu/drm/xe/xe_pci_sriov.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/xe/xe_pci_sriov.c b/drivers/gpu/drm/xe/xe_pci_sriov.c
index 35e6b53e18ce..faac369501a6 100644
--- a/drivers/gpu/drm/xe/xe_pci_sriov.c
+++ b/drivers/gpu/drm/xe/xe_pci_sriov.c
@@ -164,6 +164,7 @@ static int pf_enable_vfs(struct xe_device *xe, int num_vfs)
 	return num_vfs;
 
 failed:
+	xe_sriov_pf_reprovision_default(xe);
 	xe_sriov_pf_unprovision_vfs(xe, num_vfs);
 	xe_pm_runtime_put(xe);
 	pf_finish_vfs_enabling(xe);
-- 
2.43.0