drm/xe: Do not attempt to bootstrap VF in execlists mode

[ Upstream commit f3b59457808f61d88178b0afa67cbd017d7ce79e ]

It was mentioned in a review that there is a possibility of choosing
to load the module with VF in execlists mode.

Of course this doesn't work, just bomb out as hard as possible.

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241210083111.230484-12-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
index 1c764f200b2a5be5375ec1f329690daec710c4cd..a439261bf4d7294cf29df83a8e47392ddd92151c 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
@@ -236,6 +236,9 @@ int xe_gt_sriov_vf_bootstrap(struct xe_gt *gt)
 {
        int err;
 
+       if (!xe_device_uc_enabled(gt_to_xe(gt)))
+               return -ENODEV;
+
        err = vf_reset_guc_state(gt);
        if (unlikely(err))
                return err;