[PATCH] EDAC/device: Use flexible array for scrub data

[Rosen Penev]

Store EDAC scrub feature data in the device feature context
allocation instead of allocating it separately.

This ties the scrub data lifetime directly to the feature context, removes
a separate allocation failure path.

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
---
 drivers/edac/edac_device.c | 12 ++----------
 include/linux/edac.h       |  2 +-
 2 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index cf0d3c2dfc04..fd3e4631ce17 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -577,7 +577,6 @@ static void edac_dev_release(struct device *dev)
 	struct edac_dev_feat_ctx *ctx = container_of(dev, struct edac_dev_feat_ctx, dev);
 
 	kfree(ctx->mem_repair);
-	kfree(ctx->scrub);
 	kfree(ctx->dev.groups);
 	kfree(ctx);
 }
@@ -643,7 +642,7 @@ int edac_dev_register(struct device *parent, char *name,
 		}
 	}
 
-	ctx = kzalloc_obj(*ctx);
+	ctx = kzalloc_flex(*ctx, scrub, scrub_cnt);
 	if (!ctx)
 		return -ENOMEM;
 
@@ -651,16 +650,10 @@ int edac_dev_register(struct device *parent, char *name,
 	if (!ras_attr_groups)
 		goto ctx_free;
 
-	if (scrub_cnt) {
-		ctx->scrub = kzalloc_objs(*ctx->scrub, scrub_cnt);
-		if (!ctx->scrub)
-			goto groups_free;
-	}
-
 	if (mem_repair_cnt) {
 		ctx->mem_repair = kzalloc_objs(*ctx->mem_repair, mem_repair_cnt);
 		if (!ctx->mem_repair)
-			goto data_mem_free;
+			goto groups_free;
 	}
 
 	attr_gcnt = 0;
@@ -748,7 +741,6 @@ int edac_dev_register(struct device *parent, char *name,
 
 data_mem_free:
 	kfree(ctx->mem_repair);
-	kfree(ctx->scrub);
 groups_free:
 	kfree(ras_attr_groups);
 ctx_free:
diff --git a/include/linux/edac.h b/include/linux/edac.h
index a6b47d27052a..3d8ee12c11be 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -864,9 +864,9 @@ struct edac_dev_data {
 struct edac_dev_feat_ctx {
 	struct device dev;
 	void *private;
-	struct edac_dev_data *scrub;
 	struct edac_dev_data ecs;
 	struct edac_dev_data *mem_repair;
+	struct edac_dev_data scrub[];
 };
 
 struct edac_dev_feature {
-- 
2.55.0