From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Thu, 11 Jun 2026 21:55:02 +0000 (+0200)
Subject: i2c: atr: annotate i2c_atr_adap_desc->aliases with __counted_by_ptr
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e696bc33c30acda698e5e921adcc7f7e61976f7;p=thirdparty%2Flinux.git

i2c: atr: annotate i2c_atr_adap_desc->aliases with __counted_by_ptr

Add the __counted_by_ptr() compiler attribute to ->aliases to improve
bounds checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260611215501.464405-3-thorsten.blum@linux.dev
---

diff --git a/include/linux/i2c-atr.h b/include/linux/i2c-atr.h
index 2bb54dc87c8e5..b52a7b9ec5362 100644
--- a/include/linux/i2c-atr.h
+++ b/include/linux/i2c-atr.h
@@ -71,7 +71,7 @@ struct i2c_atr_adap_desc {
 	struct device *parent;
 	struct fwnode_handle *bus_handle;
 	size_t num_aliases;
-	u16 *aliases;
+	u16 *aliases __counted_by_ptr(num_aliases);
 };
 
 /**