drm/xe: Check return value of GGTT workqueue allocation

Workqueue allocation can fail, so check the return value of the GGTT
workqueue allocation and fail driver initialization if the allocation
fails.

Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20251022005538.828980-2-matthew.brost@intel.com
(cherry picked from commit 1f1314e8e71385bae319e43082b798c11f6648bc)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c
index 7fdd0a9..5edc0ca 100644 (file)
--- a/drivers/gpu/drm/xe/xe_ggtt.c
+++ b/drivers/gpu/drm/xe/xe_ggtt.c
@@ -292,6 +292,9 @@ int xe_ggtt_init_early(struct xe_ggtt *ggtt)
                ggtt->pt_ops = &xelp_pt_ops;
 
        ggtt->wq = alloc_workqueue("xe-ggtt-wq", 0, WQ_MEM_RECLAIM);
+       if (!ggtt->wq)
+               return -ENOMEM;
+
        __xe_ggtt_init_early(ggtt, xe_wopcm_size(xe));
 
        err = drmm_add_action_or_reset(&xe->drm, ggtt_fini_early, ggtt);