From: jsg <jsg@openbsd.org>
Date: Mon, 29 Apr 2024 06:06:46 +0000 (+0000)
Subject: add check_add_overflow() for 6.6.29 drm
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=4d3df29298314c53d0d7547b3696f27078ee60a7;p=openbsd

add check_add_overflow() for 6.6.29 drm
---

diff --git a/sys/dev/pci/drm/include/linux/overflow.h b/sys/dev/pci/drm/include/linux/overflow.h
index 93615be569b..f4170325716 100644
--- a/sys/dev/pci/drm/include/linux/overflow.h
+++ b/sys/dev/pci/drm/include/linux/overflow.h
@@ -8,4 +8,8 @@
 #define struct_size(p, member, n) \
 	(sizeof(*(p)) + ((n) * (sizeof(*(p)->member))))
 
+#if defined(__clang__) || (defined(__GNUC__) && __GNUC__ >= 5)
+#define check_add_overflow(x, y, sum)	__builtin_add_overflow(x, y, sum)
+#endif
+
 #endif