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container_of: remove container_of_safe()
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>
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@ -21,20 +21,4 @@
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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_safe - 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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* If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
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*/
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#define container_of_safe(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_safe()"); \
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IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) : \
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((type *)(__mptr - offsetof(type, member))); })
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#endif /* _LINUX_CONTAINER_OF_H */
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