Author: hselasky
Date: Thu Feb 16 14:13:36 2017
New Revision: 313810
URL: https://svnweb.freebsd.org/changeset/base/313810
Log:
Allow container_of() to be used with constant data pointers.
Obtained from: kmacy @
MFC after: 1 week
Sponsored by: Mellanox Technologies
Modified:
head/sys/compat/linuxkpi/common/include/linux/kernel.h
Modified: head/sys/compat/linuxkpi/common/include/linux/kernel.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/kernel.h Thu Feb 16
13:32:15 2017 (r313809)
+++ head/sys/compat/linuxkpi/common/include/linux/kernel.h Thu Feb 16
14:13:36 2017 (r313810)
@@ -245,8 +245,8 @@ scnprintf(char *buf, size_t size, const
#define container_of(ptr, type, member) \
({ \
- __typeof(((type *)0)->member) *_p = (ptr); \
- (type *)((char *)_p - offsetof(type, member)); \
+ const __typeof(((type *)0)->member) *__p = (ptr); \
+ (type *)((uintptr_t)__p - offsetof(type, member)); \
})
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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