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Desnes Nunes
ac300b1516
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2190250 Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=848dba781f1951636c966c9f3a6a41a5b2f8b572 Conflicts: * Considering already applied commit <64f6a5d1922b> ("container_of: add container_of_const() that preserves const-ness of the pointer") commit 848dba781f1951636c966c9f3a6a41a5b2f8b572 Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Date: Mon, 24 Oct 2022 14:39:33 +0200 It came in from a staging driver that has been long removed from the tree, and there are no in-kernel users of the macro, and it's very dubious if anyone should ever use this thing, so just remove it entirely. Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20221024123933.3331116-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Desnes Nunes <desnesn@redhat.com>
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_CONTAINER_OF_H
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#define _LINUX_CONTAINER_OF_H
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#include <linux/build_bug.h>
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#include <linux/err.h>
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#define typeof_member(T, m) typeof(((T*)0)->m)
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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void *__mptr = (void *)(ptr); \
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static_assert(__same_type(*(ptr), ((type *)0)->member) || \
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__same_type(*(ptr), void), \
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"pointer type mismatch in container_of()"); \
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((type *)(__mptr - offsetof(type, member))); })
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/**
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* container_of_const - cast a member of a structure out to the containing
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* structure and preserve the const-ness of the pointer
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* @ptr: the pointer to the member
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*/
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#define container_of_const(ptr, type, member) \
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_Generic(ptr, \
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const typeof(*(ptr)) *: ((const type *)container_of(ptr, type, member)),\
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default: ((type *)container_of(ptr, type, member)) \
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)
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#endif /* _LINUX_CONTAINER_OF_H */
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