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Commit edc966de authored by Miguel Ojeda's avatar Miguel Ojeda Committed by Greg Kroah-Hartman
Browse files

Backport minimal compiler_attributes.h to support GCC 9 

This adds support for __copy to v4.9.y so that we can use it in
init/exit_module to avoid -Werror=missing-attributes errors on GCC 9.

Link: https://lore.kernel.org/lkml/259986242.BvXPX32bHu@devpool35/


Cc: <stable@vger.kernel.org>
Suggested-by: default avatarRolf Eike Beer <eb@emlix.com>
Signed-off-by: default avatarMiguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 8a2d56ee

include/linux/compiler.h

+16 −0
Original line number Diff line number Diff line
@@ -52,6 +52,22 @@ extern void __chk_io_ptr(const volatile void __iomem *); 


#ifdef __KERNEL__



/*

 * Minimal backport of compiler_attributes.h to add support for __copy

 * to v4.9.y so that we can use it in init/exit_module to avoid

 * -Werror=missing-attributes errors on GCC 9.

 */

#ifndef __has_attribute

# define __has_attribute(x) __GCC4_has_attribute_##x

# define __GCC4_has_attribute___copy__                0

#endif



#if __has_attribute(__copy__)

# define __copy(symbol)                 __attribute__((__copy__(symbol)))

#else

# define __copy(symbol)

#endif



#ifdef __GNUC__

#include <linux/compiler-gcc.h>

#endif