diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
index 4976d8c018ce..be0a413ee17c 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
@@ -1397,7 +1397,41 @@ int xe_gt_sriov_pf_config_set_dbs(struct xe_gt *gt, unsigned int vfid, u32 num_d
 }
 
 /**
- * xe_gt_sriov_pf_config_bulk_set_dbs - Provision many VFs with GuC context IDs.
+ * xe_gt_sriov_pf_config_bulk_set_dbs_locked() - Provision many VFs with GuC doorbells.
+ * @gt: the &xe_gt
+ * @vfid: starting VF identifier (can't be 0)
+ * @num_vfs: number of VFs to provision
+ * @num_dbs: requested number of GuC doorbell IDs (0 to release)
+ *
+ * This function can only be called on PF.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_gt_sriov_pf_config_bulk_set_dbs_locked(struct xe_gt *gt, unsigned int vfid,
+					      unsigned int num_vfs, u32 num_dbs)
+{
+	unsigned int n;
+	int err = 0;
+
+	xe_gt_assert(gt, vfid);
+	lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));
+
+	if (!num_vfs)
+		return 0;
+
+	for (n = vfid; n < vfid + num_vfs; n++) {
+		err = pf_provision_vf_dbs(gt, n, num_dbs);
+		if (err)
+			break;
+	}
+
+	return pf_config_bulk_set_u32_done(gt, vfid, num_vfs, num_dbs,
+					   pf_get_vf_config_dbs,
+					   "GuC doorbell IDs", no_unit, n, err);
+}
+
+/**
+ * xe_gt_sriov_pf_config_bulk_set_dbs() - Provision many VFs with GuC doorbells.
  * @gt: the &xe_gt
  * @vfid: starting VF identifier (can't be 0)
  * @num_vfs: number of VFs to provision
@@ -1410,25 +1444,9 @@ int xe_gt_sriov_pf_config_set_dbs(struct xe_gt *gt, unsigned int vfid, u32 num_d
 int xe_gt_sriov_pf_config_bulk_set_dbs(struct xe_gt *gt, unsigned int vfid,
 				       unsigned int num_vfs, u32 num_dbs)
 {
-	unsigned int n;
-	int err = 0;
+	guard(mutex)(xe_gt_sriov_pf_master_mutex(gt));
 
-	xe_gt_assert(gt, vfid);
-
-	if (!num_vfs)
-		return 0;
-
-	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
-	for (n = vfid; n < vfid + num_vfs; n++) {
-		err = pf_provision_vf_dbs(gt, n, num_dbs);
-		if (err)
-			break;
-	}
-	mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));
-
-	return pf_config_bulk_set_u32_done(gt, vfid, num_vfs, num_dbs,
-					   xe_gt_sriov_pf_config_get_dbs,
-					   "GuC doorbell IDs", no_unit, n, err);
+	return xe_gt_sriov_pf_config_bulk_set_dbs_locked(gt, vfid, num_vfs, num_dbs);
 }
 
 static u32 pf_profile_fair_dbs(struct xe_gt *gt, unsigned int num_vfs)
@@ -1480,10 +1498,9 @@ int xe_gt_sriov_pf_config_set_fair_dbs(struct xe_gt *gt, unsigned int vfid,
 	xe_gt_assert(gt, vfid);
 	xe_gt_assert(gt, num_vfs);
 
-	mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
-	fair = pf_estimate_fair_dbs(gt, num_vfs);
-	mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));
+	guard(mutex)(xe_gt_sriov_pf_master_mutex(gt));
 
+	fair = pf_estimate_fair_dbs(gt, num_vfs);
 	if (!fair)
 		return -ENOSPC;
 
@@ -1492,7 +1509,7 @@ int xe_gt_sriov_pf_config_set_fair_dbs(struct xe_gt *gt, unsigned int vfid,
 		xe_gt_sriov_info(gt, "Using non-profile provisioning (%s %u vs %u)\n",
 				 "GuC doorbell IDs", fair, profile);
 
-	return xe_gt_sriov_pf_config_bulk_set_dbs(gt, vfid, num_vfs, fair);
+	return xe_gt_sriov_pf_config_bulk_set_dbs_locked(gt, vfid, num_vfs, fair);
 }
 
 static u64 pf_get_lmem_alignment(struct xe_gt *gt)
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h
index a14ca7bf7e4d..a56e63f3660a 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h
@@ -34,6 +34,8 @@ int xe_gt_sriov_pf_config_set_dbs(struct xe_gt *gt, unsigned int vfid, u32 num_d
 int xe_gt_sriov_pf_config_set_fair_dbs(struct xe_gt *gt, unsigned int vfid, unsigned int num_vfs);
 int xe_gt_sriov_pf_config_bulk_set_dbs(struct xe_gt *gt, unsigned int vfid, unsigned int num_vfs,
 				       u32 num_dbs);
+int xe_gt_sriov_pf_config_bulk_set_dbs_locked(struct xe_gt *gt, unsigned int vfid,
+					      unsigned int num_vfs, u32 num_dbs);
 
 u64 xe_gt_sriov_pf_config_get_lmem(struct xe_gt *gt, unsigned int vfid);
 int xe_gt_sriov_pf_config_set_lmem(struct xe_gt *gt, unsigned int vfid, u64 size);