diff options
| author | Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> | 2019-08-02 12:37:56 +0200 |
|---|---|---|
| committer | Julian Veit <claymore1298@gmail.com> | 2020-12-08 17:42:58 +0100 |
| commit | be6d50a2c7e51b82257ab8174ce33fc2506763c8 (patch) | |
| tree | 7238d1e8c1a495dec9fe523c08ca7d9221382332 | |
| parent | b06cff64bc8cf5db2f7da372a7e022ccb9432abd (diff) | |
Backport minimal compiler_attributes.h to support GCC 9r11.0
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: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Change-Id: Ibaca0389f344f776fa69f0dff9d59a3f1191c133
| -rw-r--r-- | include/linux/compiler.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 42ab2f2e7e9..2831e6ff9c2 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -48,6 +48,22 @@ 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 |