drm/xe/tile: Abort driver load for sysfs creation failure

Ensure that the status of all tile associated sysfs entries creation is
relayed to xe_tile_init_noalloc, leading to a driver load abort if any
sysfs creation failures occur.

-v2
Avoid unnecessary warn/error messages. (Lucas)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240412181211.1155732-7-himal.prasad.ghimiray@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

Author: hghimira

drivers/gpu/drm/xe/xe_tile.c

@@ -170,7 +170,7 @@ int xe_tile_init_noalloc(struct xe_tile *tile)
 
 	xe_wa_apply_tile_workarounds(tile);
 
-	xe_tile_sysfs_init(tile);
+	err = xe_tile_sysfs_init(tile);
 
 	return 0;
 }

drivers/gpu/drm/xe/xe_tile_sysfs.c

@@ -29,7 +29,7 @@ static void tile_sysfs_fini(struct drm_device *drm, void *arg)
 	kobject_put(tile->sysfs);
 }
 
-void xe_tile_sysfs_init(struct xe_tile *tile)
+int xe_tile_sysfs_init(struct xe_tile *tile)
 {
 	struct xe_device *xe = tile_to_xe(tile);
 	struct device *dev = xe->drm.dev;
@@ -38,24 +38,22 @@ void xe_tile_sysfs_init(struct xe_tile *tile)
 
 	kt = kzalloc(sizeof(*kt), GFP_KERNEL);
 	if (!kt)
-		return;
+		return -ENOMEM;
 
 	kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
 	kt->tile = tile;
 
 	err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
 	if (err) {
 		kobject_put(&kt->base);
-		drm_warn(&xe->drm, "failed to register TILE sysfs directory, err: %d\n", err);
-		return;
+		return err;
 	}
 
 	tile->sysfs = &kt->base;
 
-	xe_vram_freq_sysfs_init(tile);
-
-	err = drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
+	err = xe_vram_freq_sysfs_init(tile);
 	if (err)
-		drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
-			 __func__, err);
+		return err;
+
+	return drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
 }

drivers/gpu/drm/xe/xe_tile_sysfs.h

@@ -8,7 +8,7 @@
 
 #include "xe_tile_sysfs_types.h"
 
-void xe_tile_sysfs_init(struct xe_tile *tile);
+int xe_tile_sysfs_init(struct xe_tile *tile);
 
 static inline struct xe_tile *
 kobj_to_tile(struct kobject *kobj)

drivers/gpu/drm/xe/xe_vram_freq.c

@@ -100,31 +100,27 @@ static void vram_freq_sysfs_fini(struct drm_device *drm, void *arg)
  * @tile: Xe Tile object
  *
  * It needs to be initialized after the main tile component is ready
+ *
+ * Returns: 0 on success, negative error code on error.
  */
-void xe_vram_freq_sysfs_init(struct xe_tile *tile)
+int xe_vram_freq_sysfs_init(struct xe_tile *tile)
 {
 	struct xe_device *xe = tile_to_xe(tile);
 	struct kobject *kobj;
 	int err;
 
 	if (xe->info.platform != XE_PVC)
-		return;
+		return 0;
 
 	kobj = kobject_create_and_add("memory", tile->sysfs);
-	if (!kobj) {
-		drm_warn(&xe->drm, "failed to add memory directory, err: %d\n", -ENOMEM);
-		return;
-	}
+	if (!kobj)
+		return -ENOMEM;
 
 	err = sysfs_create_group(kobj, &freq_group_attrs);
 	if (err) {
 		kobject_put(kobj);
-		drm_warn(&xe->drm, "failed to register vram freq sysfs, err: %d\n", err);
-		return;
+		return err;
 	}
 
-	err = drmm_add_action_or_reset(&xe->drm, vram_freq_sysfs_fini, kobj);
-	if (err)
-		drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
-			 __func__, err);
+	return drmm_add_action_or_reset(&xe->drm, vram_freq_sysfs_fini, kobj);
 }

drivers/gpu/drm/xe/xe_vram_freq.h

@@ -8,6 +8,6 @@
 
 struct xe_tile;
 
-void xe_vram_freq_sysfs_init(struct xe_tile *tile);
+int xe_vram_freq_sysfs_init(struct xe_tile *tile);
 
 #endif /* _XE_VRAM_FREQ_H_ */