drm/xe: Properly handle alloc_guc_id() failure

Release the submission_state lock if alloc_guc_id() fails.

v2: Add Fixes tag and CC stable kernel

Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: <stable@vger.kernel.org> # v6.8+
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521201711.4934-1-niranjana.vishwanathapura@intel.com

diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
index b041b76..23f7357 100644 (file)
--- a/drivers/gpu/drm/xe/xe_guc_submit.c
+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
@@ -1317,6 +1317,7 @@ static int guc_exec_queue_init(struct xe_exec_queue *q)
        return 0;
 
 err_entity:
+       mutex_unlock(&guc->submission_state.lock);
        xe_sched_entity_fini(&ge->entity);
 err_sched:
        xe_sched_fini(&ge->sched);